基于弹光调制的偏振态测量方法

偏振编码是利用光信号的偏振态承载信息进行编码，旨在解决高速光纤通信中非线性效应和偏振模色散等问题。本文提出了基于弹光调制器的偏振态测量方法，该方法不仅保留了原有弹光调制器偏振测量的优点，并且克服了现有方法无法用阵列探测器有效采集信息及调制频率高等缺点，同时给出了Matlab模拟仿真及实验验证方案。理论分析、模拟仿真及实验验证了该方法的可行性。测量结果的误差分析表明，该方法能满足测量要求，这为偏振编码在高速光纤通信中的应用创造了条件。

Polarization state measurement based on photoelastic modulation

Polarization coding is a specific encoding method by using the polarization state of optical signal carrying coded in- formation. It focuses on nonlinear effects, polarization mode dispersion and other issues in high-speed fiber-optic communi- cations. This paper presents a measurement method for polarization state based on elastic-optic modulator. This method not only retains the original advantages of elastic-optic modulator for polarization measurement, but also overcomes the defects of existing methods including high modulation frequency and invalid collection by using array detector. Matlab simulation and experimental verification scheme are given. The feasibility of this method is verified through theoretical analysis, and simulation and experimental results are carried out. The error analysis of the measurement results shows that the method can meet the measurement requirements and provide conditions for using the polarization encoding in high-speed communication.