15 October 2007 Gated-mode integrated single photon detector for telecom wavelengths
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Proceedings Volume 6771, Advanced Photon Counting Techniques II; 67711A (2007); doi: 10.1117/12.747007
Event: Optics East, 2007, Boston, MA, United States
Abstract
We have demonstrated a gated-mode single-photon detector at 1550 nm using two thermoelectrically cooled InGaAs/InP avalanche photodiodes (APDs). Balanced outputs from the two APDs were used to cancel the charge and discharge spikes, which were attributable to capacitive behavior in a gated mode. The avalanche signals were not attenuated during the spike cancellation, which enable one to reduce the bias voltage applied to the APDs and thus reduce the dark count probability. We obtained a quantum efficiency of 10.5% with a dark count probability of 4.8E-5 per gate at 212 K. A single photon detector module that integrated APD and all necessary circuits into a compact bin has been performed.
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Qing-Lin Wu, Yun Liu, Zheng-Fu Han, Wei Chen, Yi-Min Dai, Guo Wei, Guang-Can Guo, "Gated-mode integrated single photon detector for telecom wavelengths", Proc. SPIE 6771, Advanced Photon Counting Techniques II, 67711A (15 October 2007); doi: 10.1117/12.747007; https://doi.org/10.1117/12.747007
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KEYWORDS
Avalanche photodetectors

Single photon detectors

Quantum key distribution

Single photon

Avalanche photodiodes

Pulse generators

Information security

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