摘要
We demonstrate a portable system integrated with time comparison,absolute distance ranging,and optical communication(TRC)to meet the requirements of space gravitational wave detection.A 1 km free-space asynchronous two-way optical link is performed.The TRC realizes optical communication with 7.7×10^(−5) bit error rate with a Si avalanche photodiode singlephoton detector,while the signal intensity is 1.4 photons per pulse with the background noise of 3×10^(4) counts per second.The distance measurement uncertainty is 48.3 mm,and time comparison precision is 162.4 ps.In this TRC system,a verticalcavity surface-emitting laser diode with a power of 9.1μW is used,and the equivalent receiving aperture is 0.5 mm.The TRC provides a miniaturization solution for ultra-long distance inter-satellite communication,time comparison,and ranging for space gravitational wave detectors.
作者
章琼琼
庞程凯
王煜蓉
申光跃
杨雷
李召辉
黄海燕
吴光
Qiongqiong Zhang;Chengkai Pang;Yurong Wang;Guangyue Shen;Lei Yang;Zhaohui Li;Haiyan Huang;Guang Wu(State Key Laboratory of Precision Spectroscopy(East China Normal University),Shanghai 200241,China;Chongqing Key Laboratory of Precision Optics,Chongqing Institute of East China Normal University,Chongqing 401120,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)
基金
supported by the National Natural Science Foundation of China(Nos.11804099,62075062,62175067,and 11621404)
Research Funds of Happiness Flower ECNU(No.2021ST2110).
