Shao Yufeng, Tian Qing, Zhu Yaodong, Wang Anrong, Yang Qiming, Yi Linfang, Yu Ni, Li Chong, Chen Peng, Li Yanlin, Liu Shuanfan, Zuo Renjie, Yuan Jie
College of Information Science and Engineering, Jiaxing University, Jiaxing, 314001, China.
College of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, 404100, China.
Heliyon. 2024 Feb 27;10(5):e26934. doi: 10.1016/j.heliyon.2024.e26934. eCollection 2024 Mar 15.
Using dual polarization multiplexing alternate mark inversion (AMI) downlink signals, a novel radio over fiber (RoF) system integrating optical fiber and FSO channel is designed to adapt to applications in mountainous areas and other complex terrain areas. Optical heterodyne technology and self-mixing homodyne detection method are used to realize high sensitivity detection of the received signals after 25.1 km channel (including 1 km single-mode fiber and 100 m free space link) transmission. Moreover, polarization multiplexing technology is introduced to exponentially increase the transmission capacity of downlink signals. This scheme not only can be compatible with traditional optical fiber transmission systems, but also support the wireless optical access application of millimeter wave signals in RoF systems.
利用双偏振复用交替传号反转（AMI）下行链路信号，设计了一种集成光纤和自由空间光（FSO）信道的新型光纤无线（RoF）系统，以适应山区和其他复杂地形区域的应用。采用光外差技术和自混合零差检测方法，实现了在25.1千米信道（包括1千米单模光纤和100米自由空间链路）传输后接收信号的高灵敏度检测。此外，引入偏振复用技术以成倍增加下行链路信号的传输容量。该方案不仅可以与传统光纤传输系统兼容，还支持RoF系统中毫米波信号无线光接入应用。
