photonics term in listing -...
TRANSCRIPT
Photonicsterm in listing
The technology of generating and harnessing lightand other forms of radiant energy whose quantumunit is the photon. The science includes lightemission, transmission, deflection, amplificationand detection by optical components andinstruments, lasers and other light sources, fiberoptics, electro-optical instrumentation, relatedhardware and electronics, and sophisticatedsystems. The range of applications of photonicsextends from energy generation to detection tocommunications and information processing.
from the Photonics Dictionary at Photonics.com
Photonics
• Photonics was coined in analogy with Electronics- Electronics: The generation and control of electrons- Photonics: The generation and control of photons
• Compared with “Optics”, photonics has more emphasis on guided waves and optoelectronic devices
• Photonics has much in common with optical communications technology
• For a detailed definition, look at the table of contents in a book on photonics or a class syllabus
Areas Included in Photonics
• Optoelectronics: Devices that are essentially electronic in nature but involve light (e.g. light emitting diodes, liquid-crystal display, and array photodetectors)
• Electro-optics: Devices in which electrical effects play a role (e.g. lasers, and electro-optic modulators and switches)
• Quantum Electronics: Devices and systems that rely principally on the interaction of light with matter (e.g. lasers and nonlinear optical devices used for optical amplification and wave-mixing)
• Lightwave Technology: Devices and systems that are used in optical communications and optical signal processing
OPTICS ELECTRONICS
OPTO-ELECTRONICS
TRADITIONALOPTICS
COMPLETELYELECTRONIC
DEVICES(e.g.
transistors)
PHOTONICS
ELECTRO-OPTICS
Descriptions of Optical Phenomena
Quantum Optics
Electromagnetic Optics
ScalarWave Optics
RayOptics
THE GLOBAL TELECOMMUNICATIONS NETWORK
= Optical Fiber
From “Understanding Fiber Optics”By Jeff Hecht
OPTICAL COMMUNICATIONS LINK
EXTERNAL OPTICAL MODULATION
→ reduced chromatic dispersionand higher data rates.
TIME DIVISION MULTIPLEXING
MULTIPLEXER
T1 Data
T1 Data
T1 Data
T1 Data
LASEROPTICAL
MODULATOR
MULTIPLEXER DE-MULTIPLEXER
λ1
λ2
λn
λ1, λ2 … λn ADD
FIBERPOWERAMP DROP
λi
λj
PRE-AMP
IN-LINEAMP
λ1
λ2
λm
VARIABLEATTENUATOR
PHOTODIODE
WAVELENGTH DIVISION MULTIPLEXING
OPTICAL NETWORKS AND OPTICAL SWITCHING
NetworkNode
OpticalData Link
Switching “Granularity”
PHOTONIC INTEGRATED CIRCUITSA.K.A. INTEGRATED OPTICAL DEVICES
N-TYPE OPTICAL CLAD ACTIVE LAYER
METAL
ELECTRODE
P-TYPE OPTICAL CLAD
P-TYPE SUBSTATE
• SMALLER SIZE• LOWER COST• GREATERFUNCTIONALITY
LASER MODULATOR
PASSIVE OPTICAL WAVEGUIDE
InP SUBSTRATE
SEMICONDUCTOR LASER SEMICONDUCTOROPTICAL MODULATOR
• SMALLER SIZE• LOWER COST• GREATERFUNCTIONALITY
Silicon Photonics
Slide #14
Center for Integrated Access Networks- CIAN
CENTER FORINTEGRATED ACCESS NETWORKS
Industry Partners
Slide #15
Projected End-User Bandwidth Demand (Alcatel-Lucent)
CENTER FORINTEGRATED ACCESS NETWORKS
High bandwidth emerging services
Slide #16CENTER FORINTEGRATED ACCESS NETWORKS
Other examples of emerging new services that CIAN will enable
Emerging new services require end-user to end-user communications:
3D Holographic Tele-presence, Tele- medicine Real time surgery from remote locations 3D visualization at a distance 3D social networking
Video wall for collaboration
Notes:• 30 fps (video rate)• 0.5 mm res hogels• 100 views per axis• Full color
2600
1000650
10025
10 13
1HPO HPO FP FP
150mm 300mm 150mm 300mm
x2Transfer Rate (Gb/sec)
Display Size
Slide #17
Existing vs. Next-Generation Aggregation Network Topology
Slide #18
CIAN BOXIntelligent optical access/aggregation node with: Packet-rate reconfiguration and optical switching capabilities Advanced physical-layer functions with dynamic performance measurement A distributed cross-layer control plane for dynamic resource allocation & multi-layer traffic engineering
Slide #19
Testbed for Optical Aggregation Networks(TOAN)
TOAN, UA Optical Sciences
Network NodesCIAN Insertion Stations
John WissingerUniversity of Arizona
CENTER FORINTEGRATED ACCESS NETWORKS
Slide #20
Problem with Electrical Connections
• 10,000’s of Cat-6 cables• > 1000 cable bundles• Difficult to scale• Energy inefficient • Expensive
Interconnection in Data Centers
Slide #21
CIAN Optical Solution for Data Centers
21CENTER FOR
INTEGRATED ACCESS NETWORKS
Transparent Optical Switch
DataCenter
Pod(1000’s ofServers)
Fiber-OpticData Link