High sensitivity optical communication based on single-photon detection polarized pulse position modulation

Zhang, Qiongqiong; Pang, Chengkai; Yang, Lei; Li, Zhaohui; Wu, E; Wu, Guang

doi:10.1016/j.optcom.2021.126899

Cited by 8 publications

(1 citation statement)

References 17 publications

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“…After two decades of development, SNSPD has become an indispensable key technology in various fields, such as quantum communication, 7 – 9 laser detection and ranging, 10 and optical time-domain reflectometry, 11 etc. In particular, due to its ultra-high sensitivity to single photons, SNSPD has broad application prospects in the field of FSOC 12 – 15 In the 1550 nm communication band, most traditional photodetectors, such as Si photodetectors and InGaAs photodetectors, can no longer receive useful optical signals when the received optical power drops to −60 dBm 16 , 17 .…”

Section: Introductionmentioning

confidence: 99%

Performance of a superconducting nanowire single-photon detectors-based bi-directional communication system at ultra-low received optical power

Wang,

Guo,

Jia

et al. 2024

Opt. Eng.

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We study the communication capabilities of a bi-directional real-time communication system that employs superconducting nanowire single-photon detectors (SNSPDs) under ultra low received optical power conditions. Furthermore, we analyze the influence of received optical power jitter on the system's communication performance.To accomplish this, we construct a bi-directional real-time fiber optic communication system based on SNSPDs using the pulse position modulation. We successfully achieve bi-directional real-time video communication even under very low received optical power conditions, maintaining an average received optical power level of −75 dBm. The bit error rates for the uplink and downlink are measured at 2.56 × 10 −5 and 3.08 × 10 −5 , respectively. Additionally, our investigation reveals that the SNSPD can tolerate a jitter range of up to 5 dB in received optical power while ensuring uninterrupted communication. This paper delves into the practical engineering application of a high-sensitivity optical communication system based on SNSPDs, offering novel insights for optimizing their future use in free space optical communication systems.

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