conference venue - emn...

EMN DUBAI MEETING 2016 PROGRAM & ABSTRACT

Conference Venue

Public transport

From Dubai International Airport

By Metro:

Take the Red Line from Airport towards Jebel Ali and get off at the World Trade Centre Station

By Bus:

Take the Bus Number 33 to Creek Golf club and change bus number 27 To Convention Centre

bus stop

By Road:

From the Airport follow directions to Garhoud bridge going towards Sheikh Zayed Road. From

Trade Centre roundabout take the Zabeel exit and follow directions to convention Centre.


Contents

General Information........................................................................................................1

Program-at-a-glance........................................................................................................3

Program Schedule............................................................................................................4

Monday, Nov. 14 .....................................................................................................4

Tuesday, Nov. 15.....................................................................................................5

Abstract Session..............................................................................................................1

Author Index..................................................................................................................24


PROGRAM·1

General Information

The EMN Dubai Meeting 2016 will take place at ibis One Central, Dubai, United Arab Emirates. The

conference will be held from November 13 to 16, 2016.

Workshops on selected focus topics will include invited and contributed oral presentations from

Monday to Tuesday.

Registration Desk Hours

The EMN Dubai Meeting 2016 registration desk, located in the hotel lobby, will be open during the

following hours:

Sunday, Nov. 13…………………..........................................................................15:00 - 17:00

Monday, Nov. 14…………………………………………………………...……….9:00 - 17:30

Tuesday, Nov. 15……………………………..………………………….………….9:00 - 17:30


PROGRAM·2

COMMITTEES

Hyoung Koo Lee, Missouri University of Science and Technology, USA

Holger Vach, Ecole Polytechnique, University Paris-Saclay, France

Valery E. Ptitsin, Institute for Analytical Instrumentation of the Russian Academy of Sciences,

Russia

Tatsutoshi Shioda, Saitama University, Japan

Masayuki Nakamoto, Massachusetts Institute of Technology, Japan

Chao Chang, Xi’an Jiaotong University, China

Soheli Farhana, International Islamic University Malaysia, Malaysia.

Shin’ichiro Hayashi, National Institute of Information and Communications Technology (NICT),

Japan

Norio Masuda, NEC Network and Sensor Systems, Japan

Norihiko Sekine, National Institute of Information and Communications Technology，Japan

Desmond Wang, The University of Melbourne, Australia

Dushyant Sharma, University of Michigan, USA

Hai-Han Lu, National Taipei University of Technology

Jonathan Hu, Baylor University, Waco, Texas, USA

Jietai Jing, East China Normal University, P.R.China

Jianyu Wang, Shanghai Institute of Techinical Physics , CAS

Raed M. Shubair, Massachusetts Institute of Technology, USA

Slimane Abdelhalim, Centre de Développement des Technologies Avancées, Algeria

Yang Yue, Juniper Networks, USA

Zhou Dayong, The University of Oklahoma，USA

Zhiming Wang, University of Electronic Science and Technology of China, China


PROGRAM·3

Program at-a-glance

Monday Morning, Nov. 14

Vacuum Electronics & Terahertz 9:30 –11:30

Room A

Monday Afternoon, Nov. 14

Technologies 14:35 –17:25

Room A

Tuesday Morning, Nov. 15

Nonliner Optics 9:30 –11:55

Room A Tuesday Afternoon, Nov. 15

Optical Wireless Communications 14:35 –17:25

Room A


PROGRAM·4

Program for EMN Dubai Meeting

November 14-15, 2016

Monday November 14 / Room A

Session: Vacuum Electronics & Terahertz Chair: Takehiro Imura

9:30-9:55 A01: High-brightness Continuousely-tunable

Sub-terahertz wave Source

Shin'ichiro Hayashi

National Institute of Information

and Communications

Technology, Japan

9:55-10:20 A02: Beam shaping of THz radiation

Agnieszka Siemion

Warsaw University of

Technology, Poland

10:20-10:40 Session Break

10:40-11:05

A03: Theory and Simulations of a Traveling Wave

Tube Using Sheet Beam or Ring-shaped Beam for

Terahertz Wave Generation

Jirun Luo

Chinese Academy of Sciences,

China

11:05-11:30 A04: Miniaturized analyzers utilizing pyroelectric

crystal Susumu Imashuku

Tohoku University, Japan

11:30-11:55 A22: Development Activity of Terahertz Power

Module with FWG-TWT

Norio Masuda

NEC Network and Sensor

Systems, Japan

12:00 Lunch Break

Session: Technologies Chair: Jirun Luo

14:35-15:00

A05: Comparison of Four Circuit Topologies of

Magnetic Coupling Using Resonance in Wireless

Power Transfer

Takehiro Imura

The University of Tokyo, Japan

15:00-15:25 A06: Effect of tapering the magnetic field on whistler

pumped free electron laser

Manish Kumar

IIT (BHU), India

15:25-15:50 A07: Biochemical Applications of

Metallo-Supramolecular Polymers

Masayoshi Higuchi

National Institute for Materials

Science, Japan


16:10-16:35 A08: Novel Properties of Bacterial Flagellar Motor

Revealed by Analyses of Motile Pseudorevertants Kenji Oosawa

Gunma University, Japan

16:35-17:00

A09: Photoelectron Work Function Measurements of

Silver Based Contact Materials Using the Fowler

Formula

Mohamed Akbi

National Preparatory School for

Engineering Studies, Algeria

17:00-17:25 A10: Non-Unitary Effects Mitigation for Few-Mode

Fiber Transmission Systems

El-Mehdi Amhoud

Université Paris-Saclay, France

18:00 Dinner Social


PROGRAM·5

Tuesday November 15 / Room A

Session: Nonliner Optics Chair: Marcin Kowalczyk

9:30-9:55 A11: Single Blood cell imaging by lens free chip

microscopy

Rainer Riesenberg

Leibniz Institute of Photonic

Technology, Germany

9:55-10:20

A12: Design of Silica Optical Fibers with Enlarged

Core Diameter for Few-Mode Applications of

Laser-Based Data Transmission

Anton Bourdine

Povolzhskiy State University of

Telecommunications and

Informatics, Russia

10:20-10:45

A13: Offset-Frequency-Spaced Two-Tone Optical

Coherent Detection Scheme of Radio-over-Fiber

Signal and Its Polarization Diversity Technique

Toshiaki Kuri


and Communications

Technology, Japan


11:05-11:30

A14: Synchronized Pulse Optical Cavities and their

Applications in Nonlinear and Quantum Optics

Bhaskar Kanseri

Indian Institute of Technology

Delhi, India

11:30-11:55 A15: Rare-earth doped integratable micro-nano

materials and devices

Zhisong Xiao

Beihang University, China

12:00 Lunch Break

Session: Optical Wireless Communications Chair: Anton Bourdine

14:35-15:00 A16: Possibility of application the MIMO technique

in VLC systems

Marcin Kowalczyk

Warsaw University of

Technology, Poland

15:00-15:25 A17: Uplink Design for VLC systems Employing

Infrared Wireless Links

Mohammed T. Alresheedi

King Saud University, Kingdom

of Saudi Arabia

15:25-15:50

A18: First in-orbit verification of space laser

communications for micro-satellites and

LEO-to-ground polarization measurements at

1.5-μm wavelength

Morio Toyoshima


and Communications

Technology , Japan


16:10-16:35 A19: Digital Signal Processing in Optical Inter

Satellite Link Receivers

Semjon Schaefer

Christian-Albrechts-Universität

zu Kiel, Germany

16:35-17:00 A20: Kerr Combs in Microresonators: Harmonizing

Chaos into Solitons

Michael Gorodetsky

Moscow State University, Russia

17:00-17:25 A21: Advanced Radio over Fiber Network

Technologies

Seyedreza Abdollahi

Brunel University London, UK

18:00 Dinner Social


ABSTRACT·1

Invited Talk Session A01: High-brightness Continuousely-tunable

Sub-terahertz wave Source

Shin‟ichiro Hayashi1,2

, Kouji Nawata2, Kodo

Kawase3, and Hiroaki Minamide

2

1National Institute of Information and Communications

Technology, Tokyo, Japan

2RIKEN Center for Advanced Photonics, Sendai, Japan

3Graduate School of Engineering, Nagoya University,

Nagoya, 464-8603 Japan.

Email:[email protected]

Sub-terahertz electromagnetic waves

(frequency: 0.1–1 THz, wavelength: 0.3–3 mm) are

important not only in the basic sciences, such as

molecular spectroscopy, electron acceleration,

plasma measurement, and radio astronomy, but also

in numerous applications, such as broadband

wireless communication, high-precision radar,

global environmental measurement, and

nondestructive inspection, since they have higher

directivity than microwaves and higher

transmittances in the atmosphere and in soft

materials than terahertz waves (frequency > 1 THz,

wavelength < 0.3 mm). Therefore, high-brightness

(high-peak-power and narrow-linewidth) and

continuously tunable sub-terahertz wave sources that

could be widely used in such applications are

required. High-brightness sub-terahertz wave

sources have been developed since the 1970s and

have mainly employed large-scale sources, such gas

lasers, free-electron lasers, and gyrotrons. In recent

years, with the remarkable upgrade to

higher-frequency millimeter-wave oscillators based

on semiconductor technology, sub-terahertz light

sources have become more widely used. Meanwhile,

the terahertz wave generation method based on

wavelength conversion using nonlinear optical

crystals is attracting attention for its high conversion

efficiency, wide tunability, and usability at room

temperature. If the tunable bandwidth achievable by

this method can be expanded to lower frequencies

(longer wavelengths), and if seamless connections

with mature semiconductor devices can be achieved,

its rapid development can be expected, which would

benefit basic research and advance industrial

applications.

We demonstrate in this presentation the

generation of high-brightness sub-terahertz waves

(peak power of > 7 W, linewidth < 5 GHz) using

parametric wavelength conversion in a nonlinear

MgO doped LiNbO3 crystal, this is brighter than

many specialized sources such as free-electron lasers

worked at terahertz region. We revealed novel

parametric wavelength conversion process using

stimulated Raman scattering in MgO:LiNbO3

without stimulated Brillouin scattering using

recently-developed microchip Nd:YAG laser. We

also demonstrated the coherent (the energy and the

phase) detection of input terahertz waves using

nonlinear up-conversion.

A number of applications require high

brightness, that is, intense and narrowband,

sub-terahertz waves such as observing multi-photon

absorption to specific excitation states. We speculate

that the high-brightness sub-terahertz wave and its

visualization could be powerful tools not only for

solving real world problems but also fundamental

physics, such as real-time spectroscopic imaging,

remote sensing, 3D-fabrication, and manipulation or

alteration of atoms, molecules, chemical materials,

proteins, cells, chemical reactions, and biological

processes. We expect that these methods will open

up new fields and tune up killer applications.

Acknowledgements

The authors would like to thank Prof. T. Taira of IMS, Dr.

H. Sakai of Hamamatsu Photonics, all of previous and

present team members, Prof. H. Ito of RIKEN and Prof.

M. Kumano of Tohoku University for useful discussions.


ABSTRACT·2

This work was partially supported by Collaborative

Research Based on Industrial Demand of the Japan

Science and Technology Agency (JST), and JSPS

KAKENHI Grant Numbers 25220606, and ImPACT

Program of Council for Science, Technology and

Innovation.

A02: Beam shaping of THz radiation

Agnieszka Siemion1

1 Faculty of Physics, Warsaw University of Technology,

Warsaw, Poland

Email:[email protected], web site:

http://www.if.pw.edu.pl

Simple and advanced THz systems can be

improved by the use of the diffractive optical

components. Such optical elements allow to control

beam profiles for illumination and to focus or image

the THz radiation on the detector. Moreover, for

conventional and unconventional imaging

applications we can use dedicated THz optics. In all

these cases the technical aspect of the designing and

manufacturing THz optical elements is crucial.

Depending on application a phase retardation

introduced by these elements can be coded in the

form of the first order kinoform [1] to provide

almost 100% diffraction efficiency for narrowband

illumination case. Furthermore, in case of the higher

order kinoforms [2,3] we are capable to suppress

chromatic aberration strictly related to diffractive

optics. Such approach allows to apply diffractive

optical structures also for broadband illumination.

Moreover, together with fast development of

technique manufacturing of optical elements became

easy and fast by the use of 3D printable materials

which are transparent enough in the THz range. Due

to the good optical properties of paper for some

range of THz radiation it can be used for fast

prototyping [4, 5] or even manufacturing of working

optical structures. Using such material introduces

relatively not expensive way of examination of final

requirements and performance of the system.

Designing optical elements requires taking

into account not only the theoretical formulas and

assumptions but also the geometry of real optical

system and manufacturing possibilities. Each

application results in different setup configuration

which must be taken into account in the designing

process. Therefore, such parameters as the geometry

of the experimental setup, the surrounding

conditions and manufacturing possibilities must be

examined in detail before designing the optical

element dedicated to the particular application. Fig.

1 illustrates different types of lens-like structures

manufactured from paper than can be applied for

scanners, spectral imaging or simple focusing,

redirecting and shaping the beam. It can be seen that

structures have different shapes, but also different

level of difficulty, advancement and complexity.

Thus, we can see binary structures that have smaller

diffractive efficiency than phase structures having

more phase levels, but they are much easier to

manufacture. According to theoretical assumption

for diffractive gratings their optical efficiency is

limited to approximately 40%. If such efficiency

becomes insufficient, such optical elements may be

replaced with more complicated optical components

like kinoforms with almost 100% of diffraction

efficiency (in the case of lossless media and

suppressed Fresnel reflections).


ABSTRACT·3

Fig1. Different optical lens-like structures manufactured

from paper.

1. J. A. Jordan, et al., “Kinoform Lenses”, Appl.

Opt. vol. 9, pp. 1883-1887, (1970).

2. J. C. Marron, D. K. Angell, and A. M. Tai,

“Higher-Order Kinoforms”, Proc. SPIE 1211, pp.

62-66, (1990).

3. J. Suszek, et al., "High order kinoforms as a

broadband achromatic diffractive optics for

terahertz beams", Optics Express, Vol. 22, Issue

3, pp. 3137-3144, (2014).

4. A. Siemion et al., "Diffractive paper lens for

terahertz optics," Opt. Lett. 37, 4320–4322

(2012).

5. A.Siemion et al., "THz beam shaping based on

paper diffractive optics," DOI (identifier)

10.1109/TTHZ.2016.2575440, (2016).

A03: Theory and Simulations of a Traveling

Wave Tube Using Sheet Beam or Ring-shaped

Beam for Terahertz Wave Generation

Jirun Luo, Zhiqiang Zhang, Wenqiu Xie, Zicheng

Wang, Ding Zhao

Institute of Electronics, Chinese Academy of Sciences,

Beijing 100190, China

Email:[email protected]

The planer grating arrays are all-metal periodic

slow-wave structure (SWS) which are compatible

with the MEMS fabrication technology and are

hopeful to produce high output power at millimeter

and even terahertz (THz) wave when interacting

with the sheet electron beam. Compared with the

single grating arrays and the double grating arrays,

the staggered double grating arrays can enhance the

interaction impedance and broaden the operating

bandwidth of the fundamental mode effectively by

the shift between the upper and lower grating arrays,

which has good prospects in the applications of high

frequency and high power TWT (Travelling Wave

Tube) and BWO (Back-ward Wave Oscillator). This

talk will focus on the theoretical analysis and the

electromagnetic simulation of high frequency

characteristics and beam-wave interaction in the

TWT for the staggered double grating array slow

wave structure using sheet beam or ring-shaped

beam.

1. A theoretical model for the arbitrarily shaped

groove planer grating arrays was proposed. The

boundary of the groove was approximately

replaced by a series of steps and the formulas of

dispersion and interaction impedance were

obtained utilizing the field matching method

combined with the continuity of transverse

admittance. The higher order terms in the

grooves were taken into account to make the

model closer to practical situation. Based on the

„cold‟ dispersion, the „hot‟ dispersion equation

was derived for describing the linear beam-wave

interaction between the planer grating arrays and

the sheet electron beam.

2. The fields‟ distribution and HF (high frequency)

characteristics were compared among the single

grating arrays, double grating arrays and

staggered double grating arrays with the same

geometrical dimensions on the gratings and beam

tunnels by simulation with the full-wave

electromagnetic software CST-MWS. Theoretical

model was investigated by comparing their

calculation results of the HF characteristics of the


ABSTRACT·4

planer grating arrays with those obtained by the

CST-MWS code. The dispersion of a W band

staggered double grating arrays was measured

and the experiment results were compared to the

electromagnetic simulations and numerical

calculations.

3. A three dimensional (3-D) frequency domain

large signal model for illustrating the nonlinear

beam-wave interaction in the sheet beam TWT

and BWO based on the planer grating arrays is

presented. The self-consistent beam-wave

interaction equations are derived based on the

Floquet's theorem, the Poyting's theorem, the

equations of motion and the relativistic theorem.

Sheet beam is simulated by a set of discrete rays.

The ac and dc space-charge fields are obtained by

solving the discrete Helmholtz equations and the

discrete Poisson equation, respectively.

Nonlinear analysis for a W-band sheet beam

TWT based on a staggered double grating arrays

and a 1.03THz single grating arrays sheet beam

BWO are performed and the numerical

calculation results are compared with those

obtained from time-domain 3-D particle-in-cell

(PIC) simulations performed by CST-PS.

4. The beam-wave interaction systems for the THz

sheet beam TWT and BWO are designed and

optimized. The dimensional parameters of the

SWS are derived based on the theoretical model.

A wideband input/output structure for the

staggered double grating is proposed, which has

the merits of simple structure, low reflection and

high isolation to the gun and collector in a wide

frequency band. PIC simulations for the

beam-wave interaction systems are performed

utilizing the CST-PS.

5. The formulae of dispersion and interaction

impedance of the axisymmetric TM modes in a

coaxial double-grating slow-wave structure are

obtained utilizing field matching method, in

which the higher order terms of the field in the

grooves have been considered. The high

frequency characteristics of lowest two modes -

fundamental mode and the TM01 mode – in the

SWS were discussed by adjusting its structure

parameters. The calculated results for the

dispersion curve and the interaction impedance

were compared with those simulated by

CST-MWS code. And the parameter analysis

shows that the rational selection of the position of

the beam tunnel and the relative position of the

upper and lower gratings is helpful for the

development of the traveling-wave tube and the

back-wave oscillator to improve bandwidth and

enhance interaction impedance.

6. If possible, the beam-wave interaction in the TWT

with the coaxial double-grating slow-wave

structure using ring-shaped beam may also be

discussed in this talk.

A04: Miniaturized analyzers utilizing

pyroelectric crystal

Susumu Imashuku

Institute for Materials Research, Tohoku University,

2-1-1 Katahira, Aoba-ku, Sendai, Japan

Email: [email protected]

One can obtain electron beam by changing the

temperature of a pyroelectric crystal in low-vacuum

such as 1 Pa. [1] Utilizing this phenomenon, we

realized a portable electron probe microanalyzer

(EPMA), [2,3] a portable cathodoluminescence (CL)

spectrometer, [4,5], a portable transmission electron

microscopy (TEM), [6] and a portable X-ray tube. [7]

They mainly consist of pyroelectric crystal (LiTaO3),

rotary pump, Peltier device, and detachable vacuum

joints as shown in Fig. 1. We obtained an electron

beam with a spot size of approximately 40 m for

the portable EPMA by setting an electroconductive


ABSTRACT·5

needle on the pyroelectric crystal and coating the

side of the needle tip with an insulating material.

The portable EPMA detects X-rays emitted from a

sample using an X-ray detector. We acquired a line

scan profile of copper with the width of 120 m

using the portable EPMA. The portable CL

spectrometer can detect ppm order of rare earth

elements in mineral ores of zircon and monazite by

measuring CL spectra of the samples. The portable

CL spectrometer can also distinguish rare earth

magnets (samarium-cobalt magnet and neodymium

magnet) from their colors in CL images captured

with a commercial available digital camera. The

portable TEM can obtain an image magnified 50

times.

Fig1. (a) Photo and (b) schematic view of main part of the

portable EPMA, CL spectrometer, TEM, and

X-ray tube. (c) Photo of the electron beam

generation part

1. J. D. Brownridge, Nature 358, 287 (1992).

2. S. Imashuku, A. Imanishi, and J. Kawai, Anal.

Chem. 83, 8363 (2011).

3. S. Imashuku, A. Imanishi, and J. Kawai, Rev. Sci.

Instrum. 84, 073111 (2013).

4. S. Imashuku, N. Fuyuno, K. Hanasaki, and J.

Kawai, Rev. Sci. Instrum. 84, 126105 (2013).

5. S. Imashuku, J. Kawai, and K. Wagatsuma, Surf.

Interface Anal., (2016) accepted.

6. I. Ohtani, S. Imashuku, and J. Kawai, Adv. X-ray

Chem. Anal., Japan 46, 203 (2015).

7. S. Imashuku and J. Kawai, Rev. Sci. Instrum. 83,

016106 (2012).

A05: Comparison of Four Circuit Topologies of

Magnetic Coupling Using Resonance in Wireless

Power Transfer

Takehiro Imura1

1Department of Electrical Engineering, Graduate School

of Engineering, The University of Tokyo, Kashiwashi,

Chiba, JAPAN

Email: imura@ hori.k.u-tokyo.ac.jp

Magnetic resonant coupling technology has

been presented in 2007 and its remarkable

characteristics were surprising[1]. However, it has

been clarified that, in view of circuit topology,

magnetic resonant coupling technology is

electromagnetic induction limited by resonance

phenomena. The circuit topology itself was already

known in the past. In other words, since magnetic

resonant circuit topology had never been used at

large air gap, it became a world-class discovery.

Magnetic resonant coupling is easily

understandable by categorizing each circuit topology.

Therefore, in this paper, the variation of efficiency

and power is discussed by considering four circuit

topologies. Specifically, the four circuits are as

follows: no resonant capacitor (N-N), capacitor

connected in series to secondary side (N-S),

capacitor connected in series to primary side (S-N),

and capacitor connected in series to both sides (S-S).

The S-S is magnetic resonant coupling.

Finally, it is shown that maximum efficiency

and high power can be simultaneously obtained only

from magnetic resonant coupling.


ABSTRACT·6

(a) N-N (b) N-S

(c) S-N (d) S-S

Fig. 1. Circuit topologies

1. André Kurs, Aristeidis Karalis, Robert Moffatt, J.

D. Joannopoulos, Peter Fisher, Marin Soljačić,

“Wireless Power Transfer via Strongly Coupled

Magnetic Resonances,” in Science Express on 7

June 2007, Vol. 317. no. 5834, pp. 83 – 86.

A06: Effect of tapering the magnetic field on

whistler pumped free electron laser

Manish Kumar1, Sunil Kumar

2

1Electrical Engineering Department, IIT (BHU),

Varanasi-221005, U.P., INDIA

Email: [email protected] , web site:

http://www.iitbhu.ac.in/eee/index.php/peo/faculty/34-mk.h

tml

2Student, New L-33Hyderabad Colony BHU,

Varanasi-221005, U.P., INDIA

The introduction of magnetized plasma medium

in the interaction region of a whistler-pumped

free-electron laser (FEL) offers the possibility of

generating short radiation wavelengths using

moderate energy beams. The wiggler wave vector

and its field amplitude are sensitive to the choice of

wave frequency as this slow electromagnetic wave is

dispersive in nature. By tapering the magnetic field

in a wiggler, the efficiency of the trapped electrons

of FEL was obtained up to 20%. The advantage of

this scheme is that the frequency and power of the

FEL can be controlled by tuning the plasma density

and/or magnetic field also by increasing the energy

of electron beam. Presence of plasma ensures the

space charge and current neutralization and larger

power handling capacity of the device. The

free-electron laser (FEL) operation for wiggler

frequency close to electron cyclotron frequency is

examined. Therefore, FEL dispersion relation,

Growth rate, FEL efficiency and the gain are

estimated.

Fig1. Schematic of tapered magnetic field for whistler

pumped FEL device.

2. A. Sharma and V. K. Tripathi, Physics of

Plasmas, 3, 3116 (1996), “A plasma filled

gyrotron pumped free electron laser”.

3. M. Kumar, L. Bhasin and V K Tripathi,

10.1088/0031-8949/81/04/045504, Phys. Scr. 81,

045504 (5pp), march (2010).

mailto:[email protected]


ABSTRACT·7

4. A. Sharma and V. K. Tripathi. “A whistler

pumped free electron laser.” Phys. Fluids. vol. 3 I,

pp. 3375-3378, (1988).

V. K. Tripathi and C. S. Liu, “Sideband

excitation in an electromagnetic wiggler pumped

free electron laser”, Physics of Fluids (1958-1988)

31, 3799 (1988).

5. K. K. Pant and V. K. Tripathi,“Nonlocal theory

of a whistler pumped free electron laser”, Physics

of Plasmas,1, 1025 (1994).

6. K. K. Pant and V. K. Tripathi, “Free Electron

Laser Operation in the Whistler Mode”, ieee

transactions on plasma science, vol. 22, no. 3,

june (1994).

7. K.P. Singh and V.K. Tripathi, “Laser induced

electron acceleration in a tapered magnetic

wiggler”, physics of plasmas volume 11, number

2 february (2004).

A07:Biochemical Applications of

Metallo-Supramolecular Polymers

Masayoshi Higuchi1,2

1National Institute for Materials Science, Tsukuba

305-0044, Japan

Email: [email protected], web site:

http://www.nims.go.jp/fmg/higuchi_e.html

2JST-CREST, Japan

Metallo-supramolecular polymers composed

of metal ions and ditopic organic ligands are

synthesized by the 1:1 complexation of metal ions

with the ligands in solution. The polymers show

unique electrochemical properties such as

electrochromism [1], emissive properties [2], and

ionic conductivity [3] due to the electronic

interaction between the metal ions and the ligands in

the polymer chain. In this presentation I introduce

biochemical applications of metallo-supramolecular

polymers [4].

The polymer chains of metallo-supramolecular

polymers are regarded as polycation because

cationic metal ions are introduced in the main chain.

On the other hand, DNA chains are polyanion with

many phosphates. Therefore, ionically strong

conjugation is expected between the polymer and

DNA. In our previous papers [5] we have already

reported strong binding affinity between the polymer

and DNA and cytotoxicity of the polymer to cancer

cells. Unlike mono-metal complexes such as

cisplatin, which causes intercalation, it is anticipated

that the polymer chain is conjugated with DNA

chains by groove binding. If the conjugation is

groove binding, the helical structure of

metallo-supramolecular polymer will accelerate the

binding affinity to helical DNA. In order to reveal

the influence of helicity in the polymer to DNA

binding, water-soluble helical Fe(II)-based

metallo-supramolecular polymers were designed.

The helical polymers ((P)- and (M)-polyFe) were

prepared by 1:1 complexation of Fe(II) ions and

bis(terpyridine)s bearing a (R)- and (S)-BINOL

spacer, respectively. Then, the binding affinity to

calf thymus DNA (ct-DNA) was investigated by

titration experiments in the UV-vis. spectral

measurement. As the result (P)-polyFe with the

same helicity as B-DNA showed 40-fold higher

binding activity (Kb = 13.08 107 M

-1) to ct-DNA

than (M)-polyFe. Unique rod-like images of the

DNA conjugate with (P)-polyFe were also observed

using atomic force microscopy measurement

probably due to the rigid binding between DNA

chains and the polymer. Interestingly, differences in

polymer chirality lead to significantly different

cytotoxicity levels in A549 cells. (P)-PolyFe

showed higher binding affinity to B-DNA and much

higher cytotoxicity than (M)-polyFe.

Acknowlegment


ABSTRACT·8

This research was financially supported by JST-CREST

project.

1. M. Higuchi et al., Chem. Rec., 7, 203 (2007); Adv.

Mater., 19, 3928 (2007); J. Am. Chem. Soc., 130,

2073 (2008); Chem. Asian J., 8, 76 (2013); ACS

Appl. Mater. Interfaces, 6, 9118 (2014); J. Mater.

Chem. C, 2, 9331 (2014); ACS Appl. Mater.

Interfaces, 7, 18266 (2015); ACS Appl. Mater.

Interfaces, 7, 25069 (2015); J. Mater. Chem. C, 1,

3408 (2013); Eur. J. Inorg. Chem., 2014, 3763

(2014); J. Am. Chem. Soc., 133, 1168 (2011).

1. M. Higuchi et al., Chem. Commun., 48, 4947

(2012); Chem. Commun., 49, 5256 (2013); ACS

Appl. Mater. Interfaces, 7, 19034 (2015); J.

Mater. Chem. C, 3, 12186 (2015); J. Mater.

Chem. C, 4, 1594 (2016).

2. M. Higuchi et al., J. Mater. Chem. A, 1, 9016

(2013); J. Mater. Chem. A, 2, 7618 (2014); Chem.

Commun., 51, 11012 (2015); RCS Advances, 5,

49224 (2015); J. Mater. Chem. A, 4, 4398 (2016);

ACS Appl. Mater. Interfaces, 8, 13526 (2016).

3. U. Rana, C. Chakraborty, R. K. Pandey, M. D.

Hossain, R. Nagano, H. Morita, S. Hattori, T.

Minowa, M. Higuchi, Bioconjugate Chem., 27,

(2016) accepted for publication; C.-Y. Hsu, T.

Sato, S. Moriyama, M. Higuchi, Eur. Polym. J.,

83, 499 (2016).

4. J. Li, Z. Futera, H. Li, Y. Tateyama, M. Higuchi,

Phys. Chem. Chem. Phys., 13, 4839 (2011); J. Li,

T. Murakami, M. Higuchi, J. Inorg. Organomet.

Polym. Mater., 23, 119 (2013).

A08: Novel Properties of Bacterial Flagellar

Motor Revealed by Analyses of Motile

Pseudorevertants

Kenji Oosawa1, Shuichi Nakamura

2, Seishi Kudo

2

1Division of Molecular Science, Faculty of Science and

Technology, Gunma University, Kiryu, Japan


http://seibutsu-butsuri.chem-bio.st.gunma-u.ac.jp/index.ht

ml

2Department of Applied Physics, Faculty of Engineering,

Tohoku University, Sendai, Japan

Bacterial flagellum is a biological

nanomachine that makes possible for a cell to swim

vigorously. The flagellum consists of three different

parts with distinct functions. The basal body acts as

a rotary motor, the long helical filament works as a

helical propeller to push the cell, and the hook

connects the basal body and the filament. Since the

flagellar motor is a unique rotary machine related

with cell movement, it is very interesting to figure

out a mechanism of rotation. Though a number of

analyses have been done in their function and

structure, it is not clear yet. To deal with these

problems, we introduced a novel strategy to analyze

their function with pseudorevertants that recovered

their function by introduction of a second mutation

into a certain kind of mutant.

In general mutant assay, most of mutations are

null and so characterization of them suggests only

loss of a function of protein. Since a detailed

characterization of protein function requires partially

defected mutants, we decided to isolate

pseudorevertants. By this strategy, we can

characterize phenotypes of pseudorevertants that

show different level of defected functions. For

example, we applied this method for analyses of

polymorphic helical shape of flagellar filaments [1].

We suggested that some common amino-acid

residues involved in determining helical shapes of

the filaments. Even though it has been known that

some mutations in flagellin caused different shapes

of the filament from a normal left-helix, a lot of

mutations themselves did not cause any changes of


ABSTRACT·9

shape but recovered the helical shape from a straight

filament.

We applied a similar strategy to analysis of

structure and function of FliF protein which forms

the MS ring of flagellar apparatus. Interestingly,

there were a number of pseudorevertants isolated

from a Salmonella fliF mutant, SJW3060, which

released flagellar filament from the cell and

therefore was suggested that FliF interacted with rod

proteins [2]. We isolated more than 400 mutant

strains, among them about 200 were in motAB

region and more than 100 in fliG and fliM genes.

Only five of them caused mutations in genes

encoding the rod proteins. In these cases, direct

interaction between the MS ring and the rod were

recovered by second mutations. Most of the rests

were in genes encoding the Mot proteins that form a

proton channel and part of the C ring that is involved

in flagellar assembly and motor function. Therefore,

recovery of the function of MS ring might be related

to not only structural strength of the flagellar basal

body but also rotational function of the motor.

To examine involvement of motor function in

recovery of weaken interaction between the MS ring

and the rod, we separated secondary mutations in

mot genes from the original fliF mutation in the

pseudorevertants. Most of mutants with only mot

mutation showed less motility than those of

wild-type cells in a semisolid agar plate and motility

medium. Interestingly, motile abilities of mutants

were in general better in the semisolid plate than

those in the motility medium if compared with wild

type. Next we measured swimming speeds of

mutants under a various viscosity conditions. There

were several different phenotypes shown in this

experiment. First group showed similar phenotype

with wild type that decreased its swimming speed

along increase of viscosity, second was similar with

the first one but showed smaller effect from

viscosity, third one showed almost no effect from

viscosity such as they swam with a constant speed

under different viscosities.

Here we present our results that some of the

mot mutants showed constant swimming and

rotational speed under different loads. And then

we demonstrate a possible interpretation with one

model for the flagellar motor that was proposed by

Hayashi and F. Oosawa.

1. F. Hayashi H. Tomaru, E. Furukawa, K. Ikeda, H.

Fukano & K. Oosawa, J. Bacteriol., 195, 3503

(2013).

2. H. Komatsu, F. Hayashi, M. Sasa, K. Shikata, S.

Yamaguchi, K. Namba & K. Oosawa, Biophys.

Physicobiol., 13, 13 (2016).

A09: Photoelectron Work Function

Measurements of Silver Based Contact Materials

Using the Fowler Formula

Mohamed Akbi 1,2,3

1Physics Department,

National Preparatory School for

Engineering Studies, Rouiba (Algiers), Algeria. 2Physics Department, M’hamed Bouguerra University of

Boumerdes, Boumerdes, Algeria. 3Fundamental and Apply Physics Laboratory

(FUNDAPL), Saad Dahleb University of Blida 1,

Blida, Algeria

E-mails :1. [email protected]; 2. m.akbi@univ-bou

merdes.dz

Contact materials used for electrical breakers

are often made with silver alloys. Mechanical and

thermodynamical properties as well as electron

emission of such complicated alloys present a lack

of reliable and accurate experimental data. At

present, new types of contactors with longer

duration are marketed, but manufacturers do not





ABSTRACT·10

understand well why this improvement. Nowadays

electrical switching life of switches, relays, and

contactors reaches one million operations without

failures.

The purpose of this work is to present the

development of a method for measuring

photoelectric work functions of contact materials.

Also reported in this paper are the results of

experimental work whose purpose has been the

buildup of a reliable photoelectric system and

associated monochromatic ultraviolet radiations

source, and the photoelectric measurement of the

EWF of silver based contact materials [1]. As a first

test of the experimental Ultra High Vacuum setup,

the electron work functions (EWF) of silver contacts,

namely polycristalline metals that are actually used

in relays, were measured photoelectrically, using the

Fowler Formula. Thus, both Fowler‟s method of

isothermal curves and linearized Fowler plots were

applied. Ulrahigh vacuum techniques were

employed to obtain residual gas pressure of about

5x10-9 mbar that allows accurate and reliable

photoelectric work function measurements [2].

The EWF measured at room temperature of

polycrystalline Ag contact (as commercially

available) stabilized at the vicinity of 4.26 eV after

several vacuum at 530 and 780 K, as shown in

Figure 1. This shows that the experimental method is

valid and the experimental setup is usable.

Furthermore, the experimental method has been

tested for pure metals, and then has been applied to

some silver alloys and silver pseudoalloys [3].

Results about silver based contacts show a

large dependence of the EWF with the preparation

of contact surface. Moreover, by heating alloy and

pseudoalloy contacts in ultra high vacuum, we have

observed large variations of electron work function,

which result of material component vaporization by

sheets. Observations by scanning electron

microscope and surface analyses by X-ray energy

dispersive spectroscopy, produce proves of the

phenomenon [4].

Fig1. Fowler isothermal curve of the outgassed virgin

silver contact, in high vacuum, at various

temperatures.

1. M. Akbi, IEEE Transactions on Components,

Packaging and Manufacuring Technology

TCPMT 4, 1293(2014).

2. M. Akbi and A. Lefort, J. Phys. D, Appl. Phys.

31, 1301 (1998).

3. M. Akbi, A. Bouchou, M. ferhat-Taleb, Vacuum

101, 257 (2013).

4. M. Akbi, A. Bouchou, N. Zouache, Applied

Surface Science 303, 131 (2014).

A10: Non-Unitary Effects Mitigation for

Few-Mode Fiber Transmission Systems

El-Mehdi Amhoud, Ghaya Rekaya-Ben Othman,

Yves Jaouen

Télécom ParisTech, Université Paris-Saclay

Email: [email protected]

The last twenty years have known an


ABSTRACT·11

exponential demand for network bandwidth. This

growth was

mainly caused by the build-out of the Internet and

the growing traffic generated by an increasing

number of users [1]. Since WDM systems are

approaching the nonlinear Shannon limit, intensive

research is carried on Space-division Multiplexing

(SDM) as the last degree of freedom in optical fibers

in order to feed the ever hungry demand [1]. SDM

can be realized through multimode fibers (MMFs),

that allow the propagation of more than one spatial

mode or multicore fibers (MCFs), where each core

can be single mode or multimode. Propagating

modes in MMFs are affected by a non-unitary

crosstalk known as mode dependent loss (MDL)

arising from fiber imperfections and optical

components. The presence of MDL is detrimental

for the capacity and the reliability of SDM systems

[1,2]. We propose a combination of optical and

signal processing solutions to completely mitigate

the impact of MDL in SDM transmission systems.

The accumulated MDL depends on the number

and nature of fiber spans. Strong coupling fibers

were proved to reduce the detrimental impact of

MDL by continuous mixing of modes during

propagation. In this case, the accumulated MDL

scales with the square root of the number of fiber

spans [3]. Placing random mode scramblers between

fiber slices was shown to add extra coupling and

thus MDL is reduced [4]. We propose in this work a

deterministic mode scrambler that permutes the less

attenuated modes with the most attenuated modes

[5]. This strategy allows reducing the total MDL

with only a small number of scramblers deployed in

the optical line. In Fig.1a, we show the probability

distribution function (PDF) of the average MDL for

different scrambling strategies for a 3-mode fiber.

From the figure, we notice that for an MDL of 10dB,

the proposed scrambling strategy reduces MDL to

3dB compared to 6dB with randomly scrambling

modes.

A signal processing solution based Space-Time

(ST) coding was also proved to be efficient for MDL

mitigation [6]. The principle of ST coding is to send

a linear combination of all information symbols on

all modes hence they experience different

attenuations. We compare the performance of

existing ST codes already known for wireless

communications through numerical simulations; we

derive a theoretical study of the error probability

upper bound and show the importance of orthogonal

codeword differences in absorbing the impact of

MDL. We also derive a design criterion for ST codes

construction suitable to the optical channel.

For a 3-mode fiber system, the gain brought by

placing 6 deterministic mode scramblers in the line

is 4.8 dB at BER 10-3 (Fig. 1b), by using ST coding

the gain is 4dB. Moreover, by combining both ST

and deterministic mode scrambling, MDL is

completely absorbed which is not the case when ST

coding is combined to random mode scrambling.

Accordingly, few deterministic scramblers can be

placed mainly after optical amplifiers to reduce

MDL.

Fig.1 Performance evaluation pf a 3-mode SDM system


ABSTRACT·12

1. P. J. Winzer and G. Foschini, Opt. Exp., 19 (2011)

2. C. Antonelli; A. Mecozzi, Opt. Exp., 23, (2015).

3. K. Ho and J. Kahn, Opt. Exp., 19, (2011).

4. S. Warm and K. Petermann, Opt. Exp., 21, (2013).

5. El-Mehdi Amhoud, Y. Jaouën and G. Rekaya-Ben

Othman, SPPcom‟16, paper SpTu3F.2, July (2016)

6. E. Awwad, G. Relaya-Ben Othman and Y. Jaouën,

J. Ligthwave Technol; LT-33, pp. 5084-5094

(2015).

A11: Single Blood cell imaging by lens free chip

microscopy

Rainer Riesenberg

Leibniz Institute of Photonic Technology, Jena, Germany

Email: [email protected], [email protected]

Cells are typically imaged by an optical

microscope with the help of fluorescent techniques

or phase contrast microscopy including staining. If it

should be imaged living cells in native solution a

marker and staining free technique becomes

necessary. So it is referred on living human blood

cells using phase contrast microcopy. These cells are

red blood cells as well as white blood cells with its

subtypes, neutrophils, lymphocytes and so on.

Therefore it is presented a new set-up, too, a

digital holographic microscope. The very simple

set-up consists of a laser diode of a pointer as light

source, a pinhole to generate a sufficient spatial

coherence, a microfluidic chip for guiding the blood

samples and an image sensor. The image sensor

records digital holograms at video rate. The pictures

we get by reconstruction using special algorithm.

This set-up can be used for point of care diagnostics.

The set-up is applied together with a notebook or a

smart phone. Many necessary functions and features

of an optical microscope are realized numerically: a

quasi 3D single exposure imaging, numerical

adaption of arbitrary thick sample carriers and to

mixtures of different refractive indices, video

tracking with the help of a laser pointer diode.

Results are demonstrated on all types of

human blood cells.

Fig1. Human white bloods cell with its nucleus,

one image of the 3D image set (left) and

red blood cell from different viewing angles (right)

1. M. Kanka und R. Riesenberg, Opt. Lett., 40, Nr.

5, S. 752–755 (2015).

2. R. Riesenberg und M. Kanka, Opt. Lett., 39, Nr.

17, S. 5236–5239 (2014).

3. R. Riesenberg, M. Kanka, und G. Mayer in SPIE

BiOS, 89510B (2014).

4. M. H. Jericho, H. J. Kreuzer, M. Kanka, und R.

Riesenberg, Appl. Opt., 51(10), 1503 (2012).

5. M. Kanka, R. Riesenberg, P. Petruck, und

Christian Graulig, Opt. Lett., 36 (18), 3651

(2011).

6. M. Kanka, A. Wuttig, C. Graulig, und R.

Riesenberg, Opt. Lett., 35 (2), 217 (2010).

7. M. Kanka, R. Riesenberg, und H. J. Kreuzer,

Opt. Lett., 34 (8), 1162 (2009).

8. M. Kanka und R. Riesenberg in Proc. SPIE 6631,

66311K (2007).



ABSTRACT·13

A12: Design of Silica Optical Fibers with

Enlarged Core Diameter for Few-Mode

Applications of Laser-Based Data Transmission

Anton Bourdine1

1Department of Communication Lines, Povolzhskiy State

University of Telecommunications and Informatics (PSUTI),

Samara, Russia

Email: [email protected] [email protected] ,

web site: http://www.psuti.ru

High bit rate laser-based data transmission

over silica optical fibers with enlarged core diameter

in comparison with standard singlemode fibers

(SMFs) is found variety infocommunication

applications. Since IEEE 802.3z standard was

ratified on 1998 [1] this technique started to be

widely used for short-range in-premises distributed

multi-Gigabit networks like in-building structural

cable systems (SCS), local area networks, SCS of

data and computing centers, storage area networks

etc., which are based on silica multimode optical

fibers (MMFs) 50/125. Nowadays it becomes to be

in demand for on-board and industrial network

applications requiring 1Gps and more bit rates over

MMFs with much enlarged core diameter up to 100

m [2], as well as this technique is also considered

as an alternative solution for new-generation

transport networks providing extra-high bit rates of

hundreds Tbps and more [3]. Here nonlinear effects

occurring in standard silica SMFs during

propagation of optical signals grouped by DWDM

systems with narrow channel spacing become the

main issue [4, 5], and a passage to enhancing of

fiber effective area by core diameter enlargement is

one of the obvious methods for decreasing or even

suppression of optical fiber own nonlinearity.

Because emission from the conventional

laser-source may contain from only one fundamental

mode, as well as up to 5…6 transversal modes

depending on laser type (DFB / LD / VCSEL), only

several guided modes with particular orders would

be excited in optical fiber with enlarged core

diameter. Here optical signal propagates over those

fibers in a so-called few-mode regime [1], and

differential mode delay (DMD) becomes the main

linear distortion effect for few-mode fiber optic links.

This work presents an alternative method for design

special refractive index profiles of silica few-mode

fibers (FMFs) with enlarged core diameter. Here

some results are presented concerning with

refractive index profile synthesis for FMFs with

effective mode area more 140 m2 and low DMD for

transport networks, as well as DMD curves

corresponding to profiles for MMFs 50/125 and

100/125 for in-premises and on-board/industrial

cable systems.

Fig1. DMD curves over “C”-band for two synthesized

samples of silica 6-LP-modes FMF 22/125 profiles

Fig2. DMD curves over “O”-band for reference and

synthesized samples of MMF 100/125 profiles

The reported study was funded by RFBR according to the

research project No. 16-37-60015 mol_a_dk and by




ABSTRACT·14

Grant of the President of Russian Federation, research

project No. MD-9418.2016.8

1. S. Bottacchi, Multi-Gigabit transmission over

multimode optical fibre. Theory and design

methods for 10GbE systems (John Wiley &

Sons Ltd.), 654 (2006).

2. E. Olson, Military and Aerospace Electronics 5

(2016).

3. D.J. Richardson et al., Nature Photonics 7, 354–

362 (2013).

4. R.-J. Essiambre et al., IEEE Journal of

Lightwave Technology 28(4), 662 – 701 (2010).

5. A. Mecozzi et al., IEEE Journal of Lightwave

Technology 30(12), 2011 – 2024 (2012).

A13: Offset-Frequency-Spaced Two-Tone Optical

Coherent Detection Scheme of Radio-over-Fiber

Signal and Its Polarization Diversity Technique

Toshiaki Kuri1, Takahide Sakamoto1

1Network System Research Institute, National Institute of

Information and Communications Technology, Koganei,

Tokyo, Japan

Email:{kuri, tsaka}@nict.go.jp

We have proposed a

laser-phase-fluctuation-insensitive optical coherent

detection scheme assisted by a digital signal

processing technique for radio-over-fiber (RoF)

systems [1, 2]. In this system, a “two-tone” local

light is used for an individual optical coherent

detection of both the carrier and the modulated

components of RoF signal, where a frequency

separation of two-tone local light is different from

that of the RoF signal, which is called

“offset-frequency-spaced”. In the demonstration of

our schemes, the state-of-polarization (SOP) of the

received RoF signal and the two-tone local light was

manually matched to get the maximum output after

the photo-detection. However, the SOP mismatch is

the essential problem for the optical coherent

detection. To overcome this problem, polarization

diversity is an important technique. Here, we are

thinking that there are some polarization diversity

techniques, which are applicable to our optical

coherent detection scheme. Recently, a combination

technique of constellations recovered from two

orthogonal polarization components has been newly

proposed as one of polarization diversity techniques

in offset-frequency-spaced two-tone optical coherent

transmission of radio-over-fiber signal [3], as shown

in Fig. 1. With this technique, successful

combination of 10-Gbaud

quadrature-phase-shift-keying constellations

recovered from two orthogonal polarization

components after 20-km standard single-mode fiber

transmission is experimentally demonstrated for

some SOPs and the transmission quality is also

evaluated. As a result, it is shown that the

polarization diversity effect can be maintained.

Fig1. Fundamental block diagram of proposed

polarization diversity technique.

1. T. Kuri, T. Sakamoto, G.-W. Lu, and T.

Kawanishi, “Laser-phase-fluctuation-insensitive

optical coherentdetection scheme for


ABSTRACT·15

radio-over-fiber system,” IEEE/OSA J.

Lightwave Technol., vol. 32, no. 20,

pp.3803-3809 (2014).

2. T. Kuri, T. Sakamoto, and T. Kawanishi,

“Laserphase-fluctuation-insensitive optical

coherent transmission of

16-quadrature-amplitude-modulation

radio-over-fiber signal (Top Scoring Paper),”

IEEE/OSA J. Lightwave Technol., vol. 34, no. 2,

pp.683-690 (2016).

3. T. Kuri, T. Sakamoto, and T. Kawanishi,

“Recovered-constellation combining for

polarization-insensitive offset-frequency-spaced

two-tone optical coherent detection scheme in

radio-over-fiber systems,” Proc. OECC2015,

JMoD.44, Shanghai (2015).

A14: Synchronized Pulse Optical Cavities and

their Applications in Nonlinear and Quantum

Optics

Bhaskar Kanseri

Department of Physics, Indian Institute of Technology

Delhi, Hauz Khas, New Delhi-110016, India


http://web.iitd.ac.in/~bkanseri

Synchronized pulse optical cavities refer to those

optical resonators which operate in pulsed regime

and thus are having well defined mode properties in

time domain. Here, the cavity length has to be

chosen such that the roundtrip time is an integer

multiple of the spacing of the pulses, i.e. cavity

needs to be „synchronized‟ with the input pulsed

source. In addition, an interferometric stabilization is

required between the cavity and the input field. In

the frequency domain, this implies a complete

overlap of the laser frequency combs (all the lines of

the laser output) characterizing the mode locked

laser pulse with the spectral modes of the cavity, so

that all the lines of the frequency comb can be

resonant simultaneously [1].

Such optical cavities in pulsed domain have

found several applications in nonlinear optics. They

have been used in non-linear frequency conversion

of femtosecond/picosecond laser pulses [2]. Such

cavity effect on pulsed radiation increases the

efficiency of such frequency conversion by

manifolds. For instance, as shown in Fig.1, recently

we have experimentally demonstrated a frequency

doubling efficiency of 53% for weak infrared

femtosecond pulses at 1.4 nJ/pulse energy using a

BIBO crystal placed in a synchronized pulse optical

cavity working at 78 MHz. The cavity losses, mode

matching and impedance matching were also studied

using a simple SHG model, showing reasonably

good agreement between theory and experiment [3].

Fig1. Realisation of a synchronized pulse optical cavity

for second harmonic generation of weak femtosecond

pulses using a BIBO crystal placed inside the cavity. For

notations and other details pl. refer to [3].

The synchronized pulse optical cavities are also

important in the area of quantum optics, where they

could work as a short-time memory device, storing a

weak pulse containing few photons for timescales

ranging from several nanoseconds to several

milliseconds. Thus one can store any quantum state

(say single photon) inside such cavity and can

extract it after certain time duration in the multiples

of cavity roundtriptime, essentially using the cavity

as a controllable delay line. For handling reasons,

not only realisation of such cavities require high


ABSTRACT·16

repetition rate pulses (so that the cavity size could be

small), but also highly reflective optics and lossless

active insertion-extraction mechanism. One can

employ synchronized pulse optical cavities to

approximate an on demand quantum source, for

Fock state generation and for the realization of all

cavity Schrödinger cat state [4] for quantum

information applications.

1. R.J. Jones, J. He, Opt. Lett. 29, 2812 (2004).

2. H. Carstens et al, Opt. Express 21, 11606 (2013).

3. B. Kanseri, M. Bouillard and R. Tualle-Brouri,

Optics Communications 380, 148 (2016)

4. J. Etesse, M. Bouillard, B. Kanseri and R.

Tualle-Brouri, Phys. Rev. Letts. 114, 193602 (2015).

A15: Rare-earth doped integratable micro-nano

materials and devices

Jiaming Liu, Hao Zhang, Jian Lin, Wenxiu Li, Xia

Xu, Anping Huang, Zhisong Xiao*

Key Laboratory of Micro-nano Measurement,

Manipulation and Physics (Ministry of Education),

School of Physics and Nuclear Energy Engineering,

Beihang University, Beijing 100191, China

*Corresponding author: [email protected]

Materials and devices based on rare-earth have

attracted substantial attention and achieved great

successes in the past decades due to their important

potential applications in several areas, such as

optical communications, infrared detection, medical

imaging, sensing, solid state lasers and displays.

Particularly, erbium-doped fiber amplifiers have

been extraordinarily successful in broad optical gain

around 1.5~1.6μm. Devices integration decreases the

overall size and cost. It allows for the combination

of many functions on chip. Optical waveguide is

used in most integrated optic devices to confine and

guide light in higher refractive index channels. In

this article we review the various rare-earth doped

materials and devices for broadband and visible to

mid-infrared light emission.

A16: Possibility of application the MIMO

technique in VLC systems

Marcin Kowalczyk1

1 Institute of Telecommunications, Warsaw University of

Technology, Warsaw, Poland


http://www.elka.pw.edu.pl/eng

Rapidly growing share of LED lighting in

world market opens new possibilities in the context

of introduction a new kind wireless transmission

based on this type lighting, known as visible light

communications (VLC) [1-5]. However, due to the

fact that modulation bandwidth of common LEDs,

which are used for lighting purpose, is typically no

more than couple or dozen MHz, it is necessity to

find a way, which can ensure that the data

transmission throughput in such systems, will be on

a level, which is normally expected today or higher.

This means in practice that additional techniques

like spectrally effective formats of modulation must

be used, if we want ensure a suitable data throughput

in the such systems. Because, typically for lighting

purpose of space in the same time is used more than

one LED bulb, the MIMO technique can be applied

for this purpose also [6-8]. Using this technique can

have also additional benefits, not only in the context

of providing higher bit rate, but also increasing of

coverage as well as service more devices in the same

time can be obtained. The possibility of using of

MIMO technique at VLC systems was considered in

this paper, based on the mathematical model.



ABSTRACT·17

1. 802.15.7-2011-IEEE Standard for Local and

Metropolitan Area Networks--Part 15.7:

Short-Range Wireless Optical Communication

Using Visible Light

2. J. Vucic, 513 Mb/s Visible Light

Communications Link Based on

DMT-Modulation of a White LED, IEEE/OSA J.

Lightwave Tech, 28 (24), 3512-3518 (2010)

3. Giustiniano, D., Tippenhauer, N.O. and Mangold,

S., Low-complexity Visible Light Networking

with LED-to-LED communication, Conference

IFIP Wireless Days (WD) 2012, 1-8 (2012)

4. Komine, T. and Nakagawa, M., Fundamental

Analysis for Visible-Light Communication

System using LED Lights, IEEE Transactions on

Consumer Electronics, 50 (1), 100-107 (2004)

5. H. Haas, Visible Light Communication, in

Optical Fiber Communication Conference, OSA

Technical Digest (online), Tu2G.5.(2015)

6. Azhar, Ahmad Helmi, T. Tran, and Dominic

O'Brien. A Gigabit/s indoor wireless transmission

using MIMOOFDM visible-light

communications, IEEE Photonics Technology

Letters, 25 (2), 171-174 (2013)

7. M. Kowalczyk, 2 × 2 MIMO VLC Optical

Transmission System Based on LEDs in a

Double Role. ACTA PHYSICA POLONICA A,

130 (2016), 41-44 (2016)

8. M. Kowalczyk, Modeling of multi-channel

MIMO-VLC systems in the indoor environment ,

Proc. SPIE 10031, Photonics Applications in

Astronomy, Communications, Industry, and

High-Energy Physics Experiments 2016,

doi:10.1117/12.2247468;

http://dx.doi.org/10.1117/12.2247468

A17: Uplink Design for VLC systems Employing

Infrared Wireless Links

Mohammed T. Alresheedi1, Ahmed Taha Hussein

2

and Jaafar M. H. Elmirghani 2

1Department of Electrical Engineering, King Saud

University, Riyadh, Kingdom of Saudi Arabia,

[email protected]

2School of Electronic and Electrical Engineering,

University of Leeds, Leeds LS2 9JT, UK

The large and continuous growth in mobile

devices including smart phones, laptops, and

Internet of Things (IoT) devices is driving a huge

demand for data access to wireless networks. Visible

light communication (VLC) is becoming more

popular everyday due to its inherent advantages over

radio frequency (RF) systems. Although VLC

systems provide lighting and communications

simultaneously from LEDs, the uplink channel

design in such a system is challenging task. This is

due to the energy limitations of mobile devices

(where such light does not need to be generated for

illumination) and also due to the potential glare from

the light where VLC signals can cause discomfort to

human eyes and affect the indoor illumination.

In this paper, we introduce a solution in which

the uplink challenge in indoor VLC is resolved by

the use of an Infrared (IR) link. We propose a new

fast adaptive beam steering IR system (FABS-IR) to

improve the uplink performance at high data rates

while providing security for applications. The goal

of our proposed system is to enhance the received

optical power signal and mitigate the channel delay

spread when the system operates at a high

transmission rate. The channel delay spread is

minimised from 0.22 ns given by hybrid diffuse IR

link to almost 0.07 ns. At 1.25 Gb/s, our results

show that the imaging FABS-IR system

accomplished about 14.7 dB signal to noise ratio



ABSTRACT·18

(SNR) in the presence of multipath dispersion,

receiver noise and transmitter mobility.

Fig. 1 The channel delay spread of our proposed

systems employing non-imaging and imaging

receiver, when the transmitter moves along the x=1m

line.

Fig. 2 The SNR results of our proposed systems

imaging HCD-IR with total transmit power Pt= 1 W

and imaging FABS-IR with Pt=150 mW, when

ransmitter operates at 1.25 Gb/s and moves along

x=1m while the receiver is fixed at the centre of the

ceiling.

A18: First in-orbit verification of space laser

communications for micro-satellites and

LEO-to-ground polarization measurements at

1.5-μm wavelength

Morio Toyoshima1

1Space Communications Laboratory, Wireless Networks

Research Center, National Institute of Information and

Communications Technology (NICT), 4-2-1, Nukui-Kita,

Koganei, Tokyo 184-8795 Japan

Email: [email protected], web site: http://www.nict.go.jp

National Institute of Information and

Communications Technology (NICT) has

successfully conducted several laser communication

experiments between geostationary earth orbit (GEO)

and low earth orbit (LEO) satellites and optical

ground stations (OGSs). To date other

organizations have also conducted many space laser

communication demonstrations worldwide and the

time has come when space laser communications

can be used as operational systems. NICT

developed the Small Optical TrAnsponder (SOTA)

to make it suitable for usage onboard micro-satellites

[1]. The development of systems for high-speed

data transmission between low-earth-orbit (LEO)

satellites and terrestrial sites is expected to be

powerful communications means in the future.

Space Optical Communications Research

Advanced Technology Satellite (SOCRATES),

which mass is 50-kg-class, embarked with the

SOTA and the small camera simultaneously and was

launched on May 24th, 2014 by the H-IIA launcher.

After the checkouts of the satellite bus systems and

the SOTA mission, laser communication

experiments were conducted with 10-Mbps/1-Mbps

optical downlinks from the 50-kg-class

micro-satellite with the NICT 1-m diameter OGS

telescope.

Fig. 1. SOTA proto-flight model (left: optical part; right:

electrical part).


ABSTRACT·19

Figure 1 shows the optical and electrical parts

of the SOTA proto-flight model. There are four laser

beams: a 0.98-μm communication laser (Tx 1), two

laser beams for quantum key distribution (QKD) (Tx

2 and Tx 3), and the 1.55-μm communication laser

(Tx 4) in the SOTA. There are two sensors for

acquisition and tracking. The fine pointing

mechanism (FPM) is implemented in Tx 4. The

images taken by the onboard small camera were

successfully downloaded via the optical link on June

3rd, 2015, which was the world first data

transmission from 50-kg-class micro-satellites via

laser communication links [2].

NICT also plans to conduct basic satellite

QKD experiments [3]. The quantum bit error ratio

(QBER) is the most important parameter for QKD

and can be evaluated from the number of counts

measured by the single photon counting modules

(SPCMs). If linear polarized laser beams are

transmitted from the SOTA onboard the

micro-satellite, the polarized laser pulses can be

measured by SPCMs on the ground and the

polarization analysis will be conducted. Before the

basic satellite QKD experiments with SPCMs, NICT

has successfully conducted the first measurement of

a linearly-polarized laser source in space at 1.55-μm

using a QKD-like receiver on the ground installed in

the NICT 1.5-m diameter OGS telescope.

1. M. Toyoshima, H. Takenaka, Y. Shoji, Y.

Takayama, Y. Koyama, and M. Akioka,

CSNDSP10, OWC-10, Northumbria University,

United Kingdom, July 21-23 (2010).

2. http://www.nict.go.jp/press/2015/06/03-2.html

3. M. Toyoshima, T. Sasaki, H. Takenaka, Y.

Takayama, Y. Koyama, M. Fujiwara, and S.

Sasaki, Trans. JSASS Aerospace Tech. Japan, 10,

pp.Pj_9-Pj_15 (2012).

4. A. C.-Casado, H. Kunimori, H. Takenaka, T.

Kubo-Oka, M. Akioka, T. Fuse, Y. Koyama, D.

Kolev, Y. Munemasa, and M. Toyoshima,

OPTICS EXPRESS, 24, 12254–12266, (2016)

A19: Digital Signal Processing in Optical

Inter-Satellite Link Receivers

Werner Rosenkranz1, Semjon Schaefer

1

1Christian-Albrechts-Universität zu Kiel, Chair for

Communications, Kaiserstraße 2, D-24143 Kiel,

Germany

Email: [email protected].Þ

Due to higher data rates, lower power

consumption and higher data security, optical

inter-satellite links (OISL) offer an attractive

alternative to conventional RF-communication. For

example OISLs enable near real-time earth

observations in a LEO (low earth orbit) to GEO

(geostationary earth orbit) data relay configuration

(see Fig. 1a), which require high-speed

communication links between satellites in different

orbits and between satellites and earth. Due to the

very high distances of up to 45,000 km the design of

the optical receivers needs to enable very high

receiver sensitivities which requires careful carrier

synchronization and a quasi-coherent detection

scheme (Fig. 1b). In state of the art systems a

homodyne detection scheme uses an optical

phase-locked loop (OPLL), typically in a

Costas-loop configuration, to adjust the frequency

and phase of the local laser to the incoming signal.

However, the OPLL hardware complexity

increases with the modulation order. Therefore,

applying an intradyne detection scheme, where the

local laser at the receiver runs un-synchronized and

frequency offset and phase noise compensation is

done by digital signal processing after the optical

front end, seems to be a possible alternative for

future OISL systems.

We present a comparison of homodyne and

intradyne detection schemes for high-order

modulation formats in optical inter-satellite

communication systems. The homodyne detection

based on OPLL techniques is numerically

investigated for BPSK and QPSK in terms of


ABSTRACT·20

frequency acquisition and data demodulation. We

compare this scheme with intradyne detection based

on digital frequency offset and phase noise

compensation as an approach for future flexible

software defined systems. We explain the applied

algorithms and present numerical simulations in

terms of receiver sensitivity and compare the

receiver complexity of both schemes. Finally, we

show that digital frequency offset compensation is a

promising solution in OISL for increasing the data

rate and lowering laser linewidth requirements as

well as acquisition time.

Fig1. OISL scenario (a), OISL BPSK transmission

system (b).

A20: Kerr Combs in Microresonators:

Harmonizing Chaos into Solitons

M. L. Gorodetsky1,2

, V. E. Lobanov1, G. V.

Lihachev1,2

, N. G. Pavlov1,2

, A. V. Cherenkov1,2

1 Russian Quantum Center, Moscow, Russia


http://www.rqc.ru/members/michael.gorodetsky

2 Physics Department, Moscow State University, Moscow,

Russia 3 Moscow Institute of Physics and Technology,

Dolgoprudny, Russia

Optical frequency combs revolutionized

metrology and experimental physics and were

marked by Nobel Prize in 2005 (J.Hall, T.Hänch).

The advent of microresonator based Kerr combs [1]

opens a path to novel applications where traditional

combs requiring bulky apparatus cannot be used. In

this case, frequency comb is formed spontaneously

in optical ring-type or whispering gallery

microresonator in four-wave mixing cascaded

processes. Though initial expectations were

somewhat mitigated by intrinsic chaotic character of

first generation combs [2], it was shown than

coherent mode-locked combs associated with

solitons are still possible without significant

additional efforts on different platforms [3, 4]. Key

advantages of microresonator based frequency

combs are their compact form factor, high power per

comb line, and ability to access microwave

repetition rates, relevant for many application

including high capacity telecommunications or

microwave photonics. It was also revealed that

coherent Kerr combs are possible not only for

anomalous group velocity dispersion necessary for

bright optical solitons but also in normal dispersion

systems using the so-called “platicons” – solitonic

like flat-toped waveforms [5]. This opens the ability

to generate coherent combs in the UV or mid IR

spectral range with the gain bandwidth limited only

by the transparency window. Dynamical probing of

soliton states allows for controlled switching and

locking of multiple soliton states down to single

soliton per roundtrip mostly convenient for

applications [8]. Moreover, slow frequency tuning

of the pump laser augmented with phase or

amplitude modulation corresponding to the free

spectral range of the microresonator provides

http://www.rqc.ru/members/michael.gorodetsky


ABSTRACT·21

reliable convergence of initially excited chaotic

comb to mode locked single-soliton state.

The support by Ministry of Education and

Science of the Russian Federation, project

RFMEFI58516X0005 is acknowledged.

Fig1. Field distribution evolution inside disc

microresonator upon slow laser frequency

relative tuning 0 augmented with phase

modulation. Transition from chaotic state to

soliton state is clearly seen.

1. P. Del‟Haye et al., Nature 450, 1214–1217

(2007).

2. T. Herr et al. Nat. Photon. 6, 480–487 (2012).

3. T. Herr et al. Nat. Photon. 8, 145–152 (2014).

4. V. Brasch et al., Science 351, 357–360 (2016).

5. V. E. Lobanov et al., Opt. Express, 23, 7713

(2015).

6. H. Guo et al., Nat. Physics, advanced online

publications (2016).

A21: Advanced Radio over Fiber Network

Technologies

Seyedreza Abdollahi

ECE department, Brunel University London, UK

New wireless subscribers are signing up with

an increasing demand of more capacity for

ultra-high data rate transfer at speeds of multi Giga

bit per second, while the radio spectrum is limited.

This requirement of more bandwidth allocation

places heavy load on the current operating radio

spectrum congestion at lower microwave frequency.

Millimetre Wave (MM-Wave) communication

system offers a unique way to resolve these

problems in the coming super high data rate 5G

mobile networks.

Radio over Fibre (RoF) is the technique of

modulating the radio frequency (RF) subcarrier onto

an optical carrier for distribution over an optical

fibre network. RoF technology is currently receiving

large attention due to its ability to provide simple

antenna front ends, increased capacity, and wireless

access coverage. This technique has been considered

a cost-effective and reliable solution for the today

and the future wireless and mobile access networks

by using optical fibre with vast transmission

bandwidth capacity. It has the following main

features: (1) it is transparent to bandwidth or

modulation techniques. (2) Needs simple and small

BSs. (3) Centralized operation is possible.

RoF link is used in remote antenna

applications to distribute signals for Microcell or

Picocell base station in mobile communication

network. The downlink RF signals are distributed

from a Central Station (CS) to many Base Stations

(BSs) known as Radio Access Points (RAPs)

through the optical fibre links. The uplink signals

from mobile devices which are received at the RAPs

are sent back to the CS for any signal processing.

However, this system is analogue and in the

analogue system the bandwidth is limited by devices

performance and parasitic components introduced.

Thermal noise generated in active and passive

components limits the dynamic range of the system.


ABSTRACT·22

Digital signal processing has revolutionized modern

communication systems by offering unprecedented

performance and adaptivity. Since digital systems

are flexible and more conveniently interface with

other systems, and are more reliable and robust

against additive noises of devices and channel and

achieve better dynamic range than the analogue

systems.

Data converters such as Analogue-to-Digital

and Digital-to-Analogue Converters (ADCs and

DACs, respectively) are the link between the

analogue and the digital world of signal processing

and data handling. Wideband analogue to digital

conversion is a critical problem encountered in

broadband communication and radar systems. The

recent electronic analogue to digital conversion

systems experience problems such as jitter in

sampling clock, settling time of the sample and hold

circuit, speed of comparator, mismatches in the

transistor thresholds and passive component values.

These limitations imposed by all of these factors

become more severe at higher frequencies.

Photonics data converters by using the Mode-locked

laser (MLL) and electro-optical Modulator are able

to scale the timing jitter of the laser sources to the

sub-femtosecond level, which will allow the

designers to push the resolution bandwidth by many

orders of magnitude beyond what electronic

sampling systems can achieve currently.

The fully Photonic Digital-RoF (PD-RoF) link

using photonic data converters can maintain the

dynamic range more independent than optical fibre

link distance and can employ the present

infrastructure for concurrently transporting both the

digitized radio traffic and the conventional baseband

data traffic signals through metro and access

networks using wavelength division multiplexing

technique. This technique provides following

advantages over the conventional RoF networks: 1)

Additional integration of multiple services over the

conventional optical fibre networks that significantly

reduces the cost overhead of the services for mobile

operators and consequently to the end-users. 2)

Further reduction in power consumption that saves

environment as well as energy resources. 3) Expand

the wireless covered area. 4) Reduces the

maintenance costs.

A22: Development Activity of Terahertz Power

Module with FWG-TWT

Norio Masuda, Mitsuru Yoshida, Koji Okamoto

Microwave Tubes Division, NEC Network and Sensor

Systems, Ltd., Sagamihara, Kanagawa, Japan


http://www.necnets.co.jp/en/

In the last decade, there is a strong demand for

High data rate and high capacity wireless

Communications due to rapid increase of

smartphones, tablet computers, and wireless Internet

services. To meet the demand, the efforts to expand

carrier frequency from the microwave range to the

millimeter or terahertz wave range in wireless

communication links have been actively made.

Traveling wave tube (TWT) is a key power device to

extend communication distance in

telecommunication, satellite transmitters, and

wireless communication data links. We are

developing W-band portable terahertz power

modules using Wband TWT. The TWT was

developed for transmission test of high data rate.

Slow wave circuit, which is an interaction circuit

between an electron beam and a traveling wave, is

miniaturized by using folded waveguide (FWG)

structure [1]. In figure 1, outline of the TWT is about

70 x 70 x 300 mm.

TWT is also useful for THz imaging. At the

present day, X-ray fluoroscopy systems are used to

http://www.necnets.co.jp/en/


ABSTRACT·23

enhance security and safety in airport or logistics

center. The rf wave based imaging has features such

as harmless to human body or photography films,

detectable materials made of light element. This time,

we have applied W-band TWT to take fluoroscopy

images of resin objects in an envelope made of

cardboard (Fig. 3). Commercially available sensor

array (Terasense model T30/64/64) was used as

W-band detector. We are trying to improve image

quality, however it is possible to distinguish objects

from the image (Fig. 4). Because of low

invansiveness, for example, THz imaging is

expected to be applied to walk through inspection.

In Japan, several terahertz projects are currently

proceeding by the Ministry of Internal Affairs and

Communications (MIC). We have started to develop

TWT and terahertz power module (TPM) of 0.3 THz

band [2]. The TWT was designed using our

experiential technology except for FWG slow wave

structure. The electron gun adopted thermal cathode,

and the collector employed single stage collector for

small velocity dispersion of electrons. For compact

and light weight, the peoriodic permanent magnet

(PPM) structure was employed for focusing the

electron beam. Presently, we are evaluating the

electron beam efficiency by a beam test tube. Our

target is to develop a portable power module of 1W

RF power.

In near future, we will try to develop prototype

of compact outdoor units and improve performance.

Acknowledgment This work was supported in part

by R&D on amplifier technology in 300 GHz band,

in apart of R&D program on key technology in

terahertz frequency bands of the MIC, Japan.


ABSTRACT·24

Auther Index

Agnieszka Siemion...............................................................................................................................A 2

Anton Bourdine...................................................................................................................................A13

Bhaskar Kanseri................................................................................................................................. A15

El-Mehdi Amhoud...............................................................................................................................A10

Jirun Luo.............................................................................................................................................A 3

Kenji Oosawa...................................................................................................................................... A 8

Manish Kumar.................................................................................................................................... A 6

Masayoshi Higuchi..............................................................................................................................A 7

Mohamed Akbi....................................................................................................................................A 9

Marcin Kowalczyk..............................................................................................................................A16

Mohammed T. Alresheedi...................................................................................................................A17

Morio Toyoshima................................................................................................................................A18

Michael Gorodetsky............................................................................................................................A20

Norio Masuda.....................................................................................................................................A22

Rainer Riesenberg...............................................................................................................................A12

Seyedreza Abdollahi............................................................................................................................A21

Shin'ichiro Hayashi.............................................................................................................................A 1

Susumu Imashuku...............................................................................................................................A 4

Semjon Schaefer.................................................................................................................................A19

Takehiro Imura...................................................................................................................................A 5

Toshiaki Kuri......................................................................................................................................A14

Zhisong Xiao.......................................................................................................................................A16

conference venue - emn...

Documents