from the Photonics Dictionary at Photonics.com

Transcription

1 Photonics term in listing The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and information processing. from the Photonics Dictionary at Photonics.com

2 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

3 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

4 OPTICS ELECTRONICS OPTO- ELECTRONICS TRADITIONAL OPTICS PHOTONICS COMPLETELY ELECTRONIC DEVICES (e.g. transistors) ELECTRO -OPTICS

5 Descriptions of Optical Phenomena Quantum Optics Electromagnetic Optics Scalar Wave Optics Ray Optics

6 THE GLOBAL TELECOMMUNICATIONS NETWORK From Understanding Fiber Optics By Jeff Hecht = Optical Fiber

7 OPTICAL COMMUNICATIONS LINK

8 EXTERNAL OPTICAL MODULATION reduced chromatic dispersion and higher data rates.

9 TIME DIVISION MULTIPLEXING T1 Data T1 Data T1 Data T1 Data MULTIPLEXER

10 WAVELENGTH DIVISION MULTIPLEXING LASER OPTICAL MODULATOR VARIABLE ATTENUATOR PHOTODIODE λ 1 λ 2 λ 1, λ 2 λ n λ i ADD λ 1 λ 2 POWER AMP FIBER DROP IN-LINE AMP PRE- AMP λ j λ m λ n MULTIPLEXER DE-MULTIPLEXER

11 OPTICAL NETWORKS AND OPTICAL SWITCHING Network Node Optical Data Link Switching Granularity

12 PHOTONIC INTEGRATED CIRCUITS A.K.A. INTEGRATED OPTICAL DEVICES SEMICONDUCTOR LASER METAL ELECTRODE N-TYPE OPTICAL CLAD P-TYPE OPTICAL CLAD P-TYPE SUBSTATE ACTIVE LAYER SEMICONDUCTOR OPTICAL MODULATOR PASSIVE OPTICAL WAVEGUIDE LASER MODULATOR SMALLER SIZE LOWER COST GREATER FUNCTIONALITY InP SUBSTRATE

13 Silicon Photonics

14 Center for Integrated Access Networks - CIAN Industry Partners CENTER FOR INTEGRATED ACCESS NETWORKS Slide #14

15 High bandwidth emerging services Projected End-User Bandwidth Demand (Alcatel-Lucent) CENTER FOR INTEGRATED ACCESS NETWORKS Slide #15

16 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 Transfer Rate (Gb/sec) x HPO HPO FP FP 150mm 300mm 150mm 300mm Display Size Notes: 30 fps (video rate) 0.5 mm res hogels 100 views per axis Full color CENTER FOR INTEGRATED ACCESS NETWORKS Slide #16

17 Existing vs. Next-Generation Aggregation Network Topology Slide #17

18 CIAN BOX Intelligent 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 #18

19 Testbed for Optical Aggregation Networks (TOAN) Network Nodes CIAN Insertion Stations TOAN, UA Optical Sciences John Wissinger University of Arizona CENTER FOR INTEGRATED ACCESS NETWORKS Slide #19

20 Interconnection in Data Centers Problem with Electrical Connections 10,000 s of Cat-6 cables > 1000 cable bundles Difficult to scale Energy inefficient Expensive Slide #20

21 CIAN Optical Solution for Data Centers Data Center Transparent Optical Switch Fiber-Optic Data Link Pod (1000 s of Servers) CENTER FOR INTEGRATED ACCESS NETWORKS Slide #21 21