全光纤的级联光纤系统琼斯弥勒矩阵测量

Measurement of Jones-Mueller matrix for cascaded optical system

基于系统估值理论，提出并实现采用光纤波片的光纤系统琼斯弥勒矩阵测量．光纤波片和光纤系统有良好的适配性，且简单易行．针对光纤波片的环境敏感性，提出并实现基于系统方程矩阵自相似特点的波片延迟校准方法．此外，还通过系统优化，实现光纤波片旋转角度的调整．经实验验证，光纤波片延迟的校准和旋转角度的调整使系统误差得到了明显改善．最后，测量了1520~1620nm波长范围内两段级联光纤的偏振参数及其弥勒矩阵谱．

Based on system estimation, a method for measuring Jones-Mueller matrices of optical fiber systems using optical fiber wave-plates is proposed, and studied theoretically and experimentally. The measurement system uses optical fiber wave-plates that match the fiber system naturally. The method is feasible but with drawbacks of environmental sensitivity. To overcome the problem, a method for calibrating the retardance of waveplates is proposed and realized based on the property of similar matrices. Adjustment of rotation of optical fiber wave-plate is also achieved using system optimization. Both retardance calibration and rotation adjustment are verified experimentally. Significant improvement in the reduction of system error has been shown. The spectra of Mueller matrices of two segments of fiber in tandem are measured in the region of 1 520~1 620 nm using the pro- posed method.