Photon-counting optical time-domain reflectometry based on free-running single-photon avalanche detector

Yang Cao; Wen-Wei Tao; Yang Su; Shi-yong Dai; Jie Wang; Song Gao; Ren-De Liu; Shi-Biao Tang

doi:10.1117/12.2666408

4 April 2023 Photon-counting optical time-domain reflectometry based on free-running single-photon avalanche detector

Yang Cao, Wen-Wei Tao, Yang Su, Shi-yong Dai, Jie Wang, Song Gao, Ren-De Liu, Shi-Biao Tang

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126174W (2023) https://doi.org/10.1117/12.2666408
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

We propose and demonstrate a photon-counting optical time-domain reflectometry using a free-running Single-Photon Avalanche Detector (SPAD). A negative feedback InGaAs/InP single-photon avalanche diode, which can quickly quench the avalanche current and suppress the after pulsing effect is the core component of the homemade SPAD. The homemade SPAD operates in free-running mode, with a maximum detection efficiency of 35% at a wavelength of 1550 nm and a time jitter of 80 ps. We experimentally demonstrated that the photon-counting optical time-domain reflectometry based on a homemade free-running SPAD can achieve fast measurement. The measurement time is ~10 s, the distance is ~90 km, and the dynamic range is ~20 dB. Furthermore, we achieved a two-point resolution of ⪅ 5 m at the end of a 90 km distance.

Citation Download Citation

Yang Cao, Wen-Wei Tao, Yang Su, Shi-yong Dai, Jie Wang, Song Gao, Ren-De Liu, and Shi-Biao Tang "Photon-counting optical time-domain reflectometry based on free-running single-photon avalanche detector", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126174W (4 April 2023); https://doi.org/10.1117/12.2666408

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KEYWORDS

Single photon avalanche diodes

Sensors

Photons

Reflectometry

Single photon detectors

Calibration

Time metrology

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