High-speed free-space optical communication using standard fiber communication components without optical amplification  

作　　者：Hua-Ying Liu Yao Zhang Xiaoyi Liu Luyi Sun Pengfei Fan Xiaohui Tian Dong Pan Mo Yuan Zhijun Yin Guilu Long Shi-Ning Zhu Zhenda Xie 

机构地区：[1]Nanjing University,College of Engineering and Applied Sciences,and Collaborative Innovation Center of Advanced Microstructures,School of Electronic Science and Engineering,School of Physics,National Laboratory of Solid State Microstructures,Nanjing,China [2]Beijing Academy of Quantum Information Sciences,Beijing,China [3]Xin Lian Technology Co.,Ltd.,Huzhou,China

出　　处：《Advanced Photonics Nexus》2023年第6期1-6,共6页先进光子学通讯（英文）

基　　金：supported by the National Key R&D Program of China(Grant No.2019YFA0705000);the Leading-Edge Technology Program of Jiangsu Natural Science Foundation(Grant No.BK20192001);the National Natural Science Foundation of China(Grant Nos.51890861,11690033,and 62293523);the Zhangjiang Laboratory(Grant No.ZJSP21A001);the Key R&D Program of Guangdong Province(Grant No.2018B030329001);the National Postdoctoral Program for Innovative Talents(Grant No.BX2021122);the China Postdoctoral Science Foundation(Grant No.2022M711570);the Fundamental Research Funds for the Central Universities(Grant No.2022300158);the Jiangsu Funding Program for Excellent Postdoctoral Talent.

摘　　要：Free-space optical communication(FSO)can achieve fast,secure,and license-free communication without physical cables,providing a cost-effective,energy-efficient,and flexible solution when fiber connection is unavailable.To achieve FSO on demand,portable FSO devices are essential for flexible and fast deployment,where the key is achieving compact structure and plug-and-play operation.Here,we develop a miniaturized FSO system and realize 9.16 Gbps FSO in a 1 km link,using commercial single-mode-fibercoupled optical transceiver modules without optical amplification.Fully automatic four-stage acquisition,pointing,and tracking systems are developed,which control the tracking error within 3μrad,resulting in an average link loss of 13.7 dB.It is the key for removing optical amplification;hence FSO is achieved with direct use of commercial transceiver modules in a bidirectional way.Each FSO device is within an overall size of 45 cm×40 cm×35 cm,and 9.5 kg weight,with power consumption of∼10 W.The optical link up to 4 km is tested with average loss of 18 dB,limited by the foggy test environment.With better weather conditions and optical amplification,longer FSO can be expected.Such a portable and automatic FSO system will produce massive applications of field-deployable high-speed wireless communication in the future.

关 键 词：free-space optical communication acquisition pointing and tracking system field-deployable system 

分 类 号：TN9[电子电信—信息与通信工程]