Transcription of LINEAR-MODE SINGLE-PHOTON-SENSITIVE AVALANCHE …
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LINEAR-MODE SINGLE-PHOTON-SENSITIVE AVALANCHE …
978-1-4244-2677-5/08/$ 2008 IEEE 1 of 6 LINEAR-MODE SINGLE-PHOTON-SENSITIVE AVALANCHE PHOTODIODES FOR GHZ-RATE NEAR-INFRARED QUANTUM COMMUNICATIONS Andrew Huntington, Madison Compton, Sam Coykendall, George Soli, and George M. Williams Voxtel, Inc. Beaverton, Oregon ABSTRACT We present design and performance data for a high-speed telecom-band ( m) SINGLE-PHOTON-SENSITIVE receiver based on a new class of multi-stage InGaAs AVALANCHE photodiode (APD) operated in the proportional mode (linear mode). Peak photon detection efficiency of 70% was measured at m. Unlike Geiger-mode SINGLE-PHOTON-SENSITIVE APDs (SPADs), a multi-stage linear SPAD is operated below its AVALANCHE breakdown voltage and need not be gated to suppress afterpulsing, permitting operation at a much higher maximum count rate (MCR) without an associated increase in dark count rate (DCR). Further, the LINEAR-MODE APD preserves signal amplitude information, whereas the response of a Geiger APD is binary.
978-1-4244-2677-5/08/$25.00 ©2008 ieee 1 of 6 linear-mode single-photon-sensitive avalanche photodiodes for ghz-rate near-infrared quantum communications
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