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European Conference on Optical Communication

Single-Photon Avalanche Diode with kHz Dark Count Rates at Room Temperature for O-Band QKD

Elisa Collin, Pascal Rustige, Patrick Runge, Martin A. Schell

Published Sep 28, 2025• 0 citations
Publisher

Abstract

By switching from InGaAs to InGaAsP we improve the SPAD dark count rate from 18 kHz to 4.9 kHz for a photon detection efficiency of 20% at 293 K in the O-band. Intrinsic C-band suppression is 18.5 dB.
DOI
10.1109/ecoc66593.2025.11263161

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