Dense wavelength division multiplexing free space optical communication system and method adopting bipolar coding

• Main Authors: WANG ANRONG, YUAN JIE, SHAO YUFENG, YANG QIMING, YI LINFANG, WANG ZHUANG, LIU SHUANFAN, ZUO RENJIE, TIAN QING, YU NI, YANG JIE
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION

The invention discloses a dense wavelength division multiplexing free space optical communication system and method adopting bipolar coding, and the method comprises the steps: enabling 16 paths of AMI coded signals to complete multi-path simultaneous multiplexing through a dense wavelength division multiplexer, transmitting the signals through an FSO channel, and decomposing the signals into 16 paths of signals through a dense wavelength division demultiplexer; compared with a free space optical signal transmission scheme proposed in the industry at present, a test result proves that the method disclosed by the invention not only can effectively resist a direct current component generated by signal transmission, but also can remarkably improve the transmission rate of the AMI signal and the receiving quality after transmission, and has wide potential value in practical application. 本发明公开了一种采用双极性编码的密集波分复用自由空间光通信系统和方法，将16路AMI编码信号通过密集波分复用器完成多路同时复用，经过FSO信道传输后再由密集波分解复用器分解成16路信号，相对于目前业界已提出的自由空间光传输信号的方案，测试结果证明：本发明提