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利用矩阵方法分析了相移光栅的相移量改变时，阻带中透射窗口位置的变化情形，以及如河改变窗口锐度的问题，并进一步讨论了相移光栅在光波解复系统中的应用，这些理论结果对相移光栅的实际制作及应用有重要的指导意义。
The matrix window is used to analyze the change of the position of the transmission window in the stopband when the phase shift of the phase-shift grating is changed. The problem of the sharpness of the window such as the river is also discussed. The application of the phase-shift grating in the light-wave demodulation system These theoretical results have important guiding significance for the actual fabrication and application of phase-shift grating.