相移布喇格光栅滤波器的分析及其串扰对FDM－FSK光纤传输系统复用路数的影响

Analysis of a Phase-shifted Bragg Grating Filter and the Effect of Crosstalk on the Number of Channels in a FDM-FSK Optical Fiber Transmission System

提出并分析了一种新型的布喇格光栅滤波器，用模式耦合方程分析了滤波器的传输特性，计算了通带宽度、自由谱宽和精细度。并把它用在以频移键控（ＦＳＫ）方式调制的频分复用系统中，得到了比较理想的结果。

The optical filter is a key device used to select frequency in the FDM and high density WDM optical fiber communication systems. In this peper, a novel Bragg grating fiber filter is reported. Its transmission characteristics, width of passband, free spectral rang and fineness are analysed by a coupled-mode theory. Also, We applied the filter to the FDM-FSK system and achieved good results.