icoict presentation 1569713501

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Temperature Effects on Parallel Cascaded SilicaBased Microring Resonator

Fakhrurrozi, Subekti Ari S., Octarina Nur S., Ary Syahriar

Department of Electrical Engineering, Faculty of Science and Technology,

University of Al Azhar Indonesia


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Abstract BackgroundThis paper investigate about thecharacteristic of microring resonator

and specifically about the temperature

effect on the cascaded parallel

microring resonator.

The wavelength range used in thissimulation was on C-Band between

1530-1565 m.

The simulated temperature are varied

between 28oC to 500oC. The increased

temperature will affect to the shifting

of resonance wavelength.

Basic configuration of MR consists of a straight waveguide

and a ring resonator. MR devices can be assembled by a

single ring or multiple rings in a serial or parallel

configuration.

This paper simulates and discuss about the temperature effect

on cascaded parallel MR. This research aims to simulate theeffect of temperature changing on the data transmission in

MR.

.

INTRODUCTION

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Microring Resonator

The illustrates the basic configuration of MR.

Various kinds of losses occurred along the

propagation of light in the MR filter are

incorporated in the attenuation constant; the

interaction can be described by the matrix

relation:

12

=

12

(1)

Et1 = Ei1 t + jEi2K (2a)

Et2 = jEi1Kt + Ei2t (2b)

1 = |1|2 =

( )

(1 )(3)

Figure below is the transmission power of MR from

equation (3) and this is a single MR.

THEORY AND METHODS

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1.53 1.535 1.54 1.545 1.55 1.555 1.56 1.565

x 10-6

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1Transmission Power

Wavelength (um)

Intensity


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Cascaded-Parallel

The parallel configuration of MR. MR

parallel configuration offers more

flexibility to the manufacturing process

compared with other configurations.

In the parallel configuration, value of L

also determines the response filter and L

being the circumference of the ring.

L should vary like one other parameter. In addition toallowing precise phase relationship, the distance should

be set to be large enough to avoid direct interaction

between the ring with other rings.

Ei2 = Et2 exp (

2 ) (4)

The transmission amplitude of an optical MR for

cascaded parallel as follows:

=

(

)

1(

)

(5)

The power for the transmission of cascaded parallel MR is

obtained (6):

= |

|2 =

+2 ()

12 + 4(6)

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Sellmeier EquationThe variation of the refractive index with thetemperature at constant pressure is called the

thermo optic coefficient. The analysis of thermo

optic coefficient are essential to characteristic the

temperature dependent nonlinear optical devices,

the optical fiber communications system,

semiconductor technology and the ultrafast

femstone technology.

The sellmeier coefficient at any temperature T are computed from the room temperature sellmeier

equation and the smoothed dn/dt or C values by calculating refractive index from the relations:

= 0 (7)

The temperature affects the value of refractive index. The higher the value of refractive index with the

increase in temperature occurs.

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0 50 100 150 200 250 300 350 400 450 5001.4655

1.466

1.4665

1.467

1.4675

1.468

1.4685

1.469

1.4695

1.47

1.4705

Temperature [celcius]

refractiveindex

RESULT AND DISCUSSION


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Temperature Effect on Cascaded-Parallel MRThe transmission power as a function of

wavelength in MR with radius of core R (Cascade

Parallel.

In thermo optic base on cascaded parallel MR,

structure and assume that only two ring cavity is

warming, the parameters that determine the

resonance wavelength is teta ().

The comparison between room temperature

(T0=28o Celcius) and high temperature (Tmax=500oCelcius).

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1.53 1.535 1.54 1.545 1.55 1.555 1.56 1.565

x 10-6

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

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1Cascaded Parallel Microring Resonator

Wavelength (um)

Power

1.53 1.535 1.54 1.545 1.55 1.555 1.56 1.565

x 10-6

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

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1

Temp. Effect between T0, T

1, T

2and T

3

Wavelength (um)

Power

T0=28 celcius (room temp)

Tmax

=500 celcius


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MR with the other temperature and comparison of with each temperature

The simulation of temperature effect of

cascaded-parallel MR with comparison of three

temperatures used in the parallel coupled MR,

from 28o Celcius up to 500o Celcius

The simulation result using difference betweenT1= 150

o Celcius, T2= 325o Celcius and T3= 500

o

Celcius. Maximum temperature 500o Celcius with

wavelength 1.542 m shift up to 1.544 m.

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50 100 150 200 250 300 350 400 450 5001.539

1.5395

1.54

1.5405

1.541

1.5415

1.542

1.5425

1.543

1.5435

1.544x 10

-6 Temp. vs Dlambda

Temperature

Dlamb

da

T1=150 celcius

T2=325 celcius

T3=500 celcius

1.53 1.535 1.54 1.545 1.55 1.555 1.56 1.565

x 10-6

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temp. Effect between T0, T

1, T

2and T

3

Wavelength (um)

Power

T0=28 celcius (room temp)

T1=150 celcius

T2=325 celcius

T3=500 celcius


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Distance between the first ring and the next has to be adjusted appropriately becausethis will cause interference or coupling in the transmission process. Wavelength shift

caused by the temperature changing in parallel cascaded MR is not significant. The

shift is occurred in a few wavelengths. Although the optical communication system

using light as the transmission, which use temperature is not too high, because the

high temperatures may result in damage to optical devices.

Temperature effect on the ring that has been heated MR has been demonstrated in the

simulation study. When it rings in the heating, the propagation constant in the ring

will change as well. This condition causes the difference in the resonance wavelength

than like before, when using room temperature (T0). Because of rising temperatures,

the caused a shift in the resonance wavelength. In this study indicate that increased

temperature 500o given in two rings (parallel cascaded) togetheryield 0.005 m.

CONCLUSION

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Tan Freddy,Integrated Optical Filters Based On Microring, Enschede, Netherlands, 2004.

Heryana Amri, Thermo-Optic Effect on Silica Based Microring Resonator (MRR), Jakarta,

2011.

Paschotta Rudiger, Encyclopedia of Laser Physics and Technology. (Wikipedia, viewed on

December, 20 2012).

Dominik G. Rabus,Integrated Ring Resonator. Springer, Berlin, pp. 3-8, 2007.

Heryana Amri, Characterization Analysis on Silica Microring Resonator, Jakarta, pp. 52-66,

2011.

REFERENCE

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THANK YOU

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icoict presentation 1569713501

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