McGill Photonic Systems Group. Andrew Kirk Micro and nano-optics Optical interconnects Applications of MEMS. Lawrence Chen Optical amplifiers Fiber lasers Transmission and coding issues. David Plant Optoelectronics VLSI photonics High speed packaging Optical switches.
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McGill Photonic Systems Group Andrew Kirk Micro and nano-optics Optical interconnects Applications of MEMS Lawrence Chen Optical amplifiers Fiber lasers Transmission and coding issues David Plant Optoelectronics VLSI photonics High speed packaging Optical switches + ~ 30 graduate students, research engineers and post-docs Dominik Pudo firstname.lastname@example.org
The PHOTON is to PHOTONics as the ELECTRON is to ELECTRONics. Three major developments in the recent past are responsible for the rejuvenation of this field: Invention of the diode laser (1961) Fabrication of low loss fiber (1970) Maturing of semiconductor optical devices (1970s to present) Modern definition of photonics as applied to communications: generation, modulation, transmission, and detection of light. “Photonics”
Optical communication High carrier frequency (1014 Hz) Low carrier frequency (Almost) no modulation effects Distortion of modulated signals Dielectric waveguides Conducting waveguides Low loss Frequency dependent loss Small wavelength Large wavelength Tight confinement Bulky High impedance medium Low impedance lines Low power High power Why light for communications ? Electrical transmission lines
As data rates increase, electrical interconnects are limited by: Power Distortion Cross-talk Pin-out capacity Fundamental: Aspect ratio limit* Limitations of electrical interconnects: the off-chip challenge *D.A.B.Miller and H.M.Ozaktas, J.Parallel Distrib. Comput., 41, pp 42-52, 1997
Campus/City/etc. Rack Shelf Backplane Board Chip Optical Communications Recent record: 10 Tbps over 100km 3 Tbps over 7300km Length 100km 10km 1mm 1cm 1m 10m 100m 1km 10cm Free-space optics Medium distance Parallel optical interconnect Long distance Optical fiber
Research Overview-1 • developing ultrafast photonic and fiber optic technologies for broadband telecommunications, optical sensing, and biomedicine. Specific areas include: • Ultrafast Photonic Signal Processing • Fiber Amplifiers and Lasers • Photonic Networks • Microwave Photonics Generation of a 325 GHz optical pulse burst
Parallel Optical Interconnects Free-space optical interconnects Parallel fiber interconnects Components for future optical fiber networks Multiplexers Switches Research Overview-2
86 mm throw 3x6 mm active area 256 channels (bidirectional) 28 channels/mm2 Clustered optical design Clustered system: 512 channel parallel optical board to board link* 86 mm Relay system Prism Prism Glass spacer Minilens Microlens array IC Detector cluster VCSEL cluster *M. Châteauneuf et al, Optics in Computing 2001, pp.64-66.
Research in micro-optics and MEMS ( Micro-Electro-Mechanical Systems Free-space micro-optics for optical interconnects Micro-optics for telecomm systems Micro-opto-electro-mechanical systems (MOEMS) Sub-wavelength structured surfaces and devices Research Overview-3
1000 sq ft., class 10,000 clean room including a fume hood High and low power laser systems Test and measurement equipment supporting 12.5 Gbps digital (BERT, scopes, etc.) and 22 GHz analog (lightwave component analyzer, signal generators, etc.) Free space and fiber based optics and optomechanics Wirebonding and packaging Clean room and packaging laboratories
New fiber optics laboratory C + L band EDFAs, broadband, DFB, and tunable sources 10 – 40 GHz mode-locked fiber laser Optical spectrum analyzer Communication signal analyzer Polarization diagnostics Fusion splicer 10 and 40 Gbps modulators; 10 Gbps receivers Fiber optics lab and design software • Software • Circuit design • Optical/fiber • Mechanical > 3 000 000 $ of equipment
Undergraduate: 423B: propagation, sources, free-space, detectors 430A: waveguides, photonic devices, network 492A: source, link, simulation, network devices Courses? Graduate: • 527B: free-space, systems, simulations • 571A: laser sources and detectors (O/E – E/O) • 596A: waveguides, propagation