Single-Photon Detector at Telecommunication Wavelengths Using an Analog Integrator for Ultra Small Avalanche Discrimination

Title
Single-Photon Detector at Telecommunication Wavelengths Using an Analog Integrator for Ultra Small Avalanche Discrimination
Authors
보우지드한상욱이민수문성욱
Keywords
Single Photon; Integrator; Quantum efficiency; After pulse
Issue Date
2013-05
Publisher
Applied Physics Express
Citation
VOL 6, NO 5, 052201-1-052201-4
Abstract
The afterpulse effect is one of the major bottlenecks limiting the performances of InGaAs/InP single-photon avalanche photodiodes (SPADs) for high-speed operation. In this paper, we present a practical and easy way to implement an afterpulse suppression scheme. Using an analog integrator circuit to discriminate small avalanche signals, we reduced drastically the afterpulse noise of the detector. At a repetition frequency of 25 MHz, the overall afterpulse probability is 1.48% with a detection efficiency of 15.6% and a dark count probability of 1:3 x 10-5. In addition, the detector features a maximum count rate of 25 MHz.
URI
http://pubs.kist.re.kr/handle/201004/45146
ISSN
18820778
Appears in Collections:
KIST Publication > Article
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