Free-running InGaAs/InP Avalanche Photodiode with Active Quenching for Single Photon Counting at Telecom Wavelengths
R. T. Thew, D. Stucki, J-D. Gautier, A. Rochas, and H. Zbinden
TL;DR
This paper introduces a CMOS-fabricated InGaAs/InP avalanche photodiode with active quenching, capable of free-running single photon detection at telecom wavelengths, emphasizing stability, reliability, and low noise.
Contribution
It presents a novel ASIC-based active quenching circuit for InGaAs/InP APDs, enabling stable free-running operation at telecom wavelengths.
Findings
Single photon detection efficiency of 10% in free-running mode
Noise level below 2 kHz
ASIC-based design ensures stability and compactness
Abstract
We present an InGaAs/InP avalanche photodiode with an active quenching circuit on an ASIC (application specific integrated circuit) that is capable of operating in both gated and free-running modes. The 1.6mm2 ASIC chip is fabricated using CMOS (complementary metal oxide semiconductor) technology guaranteeing long-term stability, reliability and compactness. In the free-running mode we find a single photon detection efficiency of 10% with <2kHz of noise.
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