Laser & Optoelectronics Progress, Volume. 61, Issue 7, 0706015(2024)
Photocount Characteristics of SNSPD for PPM Signals in Deep-Space Laser Communication (Invited)
Deep-space laser communication systems commonly use pulse-position modulation (PPM) to improve the energy efficiency of communication and use single-photon detectors for efficient signal reception. In particular, superconducting nanowire single-photon detectors (SNSPD) are one of the most suitable detector choices. In this study, we investigated the performance of high-speed PPM-SNSPD-based deep-space laser communications in terms of the dead time and jitter of SNSPD as well as the trailing phenomenon of high-speed pulsed signals. The photocount characteristics of SNSPD were analyzed. Based on this analysis, we proposed a bias-compensated guard-time PPM symbol synchronization algorithm. Compared with the conventional guard-time symbol synchronization algorithm, the proposed algorithm effectively reduces synchronization errors and improves system error performance.
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Xiaowei Wu, Lei Yang, Yueying Zhan, Yang Sun, Jiao Xiong, Qiang Wang. Photocount Characteristics of SNSPD for PPM Signals in Deep-Space Laser Communication (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(7): 0706015
Category: Fiber Optics and Optical Communications
Received: Dec. 29, 2023
Accepted: Feb. 19, 2024
Published Online: Apr. 18, 2024
The Author Email: Yang Lei (yang.lei@csu.ac.cn)
CSTR:32186.14.LOP232786