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Techniques to Improve Speed and Efficiency of Photodetectors

R.G. DeCorby, A.J.P. Hnatiw, J.N. McMullin
Proceedings of the 1999 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Edmonton, AB, May 9-12, 1999

Techniques for simultaneously realizing broad bandwidth, high efficiency, and high power photodetectors are discussed. Resonant cavity techniques circumvent the usual bandwidth-efficiency limitations associated with photodetectors. An InGaAsP/GaAs device with responsivity of 0.34 A/W at 800 nm wavelength, for 410 nm of absorbing material, is demonstrated. Coherent summation of the signals in an impedance-matched photodetector array circumvents tradeoffs between bandwidth and power-handling capability. Design of coplanar waveguide based arrays on InP is discussed, along with their applications in fibre networks.

CONTACTS: Ray DeCorby, Alan Hnatiw, Jim McMullin
SUBJECTS: Photonics
TYPE: Conference Publication
PUBLISHED: 1999

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