【摘要】 针对同时受到偏振模色散(PMD)和偏振相关损耗(PDL)作用的偏振复用系统,在系统接收端采用相干接收方式,利用基于负熵最大化的不动点复数ICA算法(T-CMN算法)对接收到的偏振复用信号进行解复用。仿真结果表明:ICA解复用后的偏振信号的传输质量明显改善,在系统中光信噪比大于20.86 dB时均能保持误码率小于10 9,符合通信系统的传输质量要求。更多还原

【Abstract】 Due to polarization mode dispersion(PMD) and polarization dependent loss(PDL) in a system, the coherent detection scheme was chosen at the receiver side of the system and T-CMN algorithm was used to separate the polarization multiplexed signals. Simulation results show that after demultiplexed by independent component analysis(ICA), the transmission quality of polarization signals is obviously improved, and when the optical signal to noise ratio of the system is greater than 20.86 dB, the bit error rate can be kept lower than10 9, which meets the requirement of a communication system.更多还原