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针对星间激光通信系统,分析了光纤光栅在此系统中的应用。为了设计出高性能的光滤波器以满足星间激光通信系统的要求,研究了光滤波器的带宽对系统性能的影响。在GEO-LEO星间链路中,考虑多普勒频移,研究了系统的归一化信噪比与滤波器带宽的关系,提出并设计了滤波器最佳带宽。根据得到的最佳带宽,设计了符合要求的光纤光栅滤波器。
For the interstellar laser communication system, the application of fiber grating in this system is analyzed. In order to design a high-performance optical filter to meet the requirements of the interstellar laser communication system, the influence of optical filter bandwidth on system performance is studied. Considering the Doppler shift in the GEO-LEO inter-satellite link, the relationship between the normalized signal-to-noise ratio of the system and the bandwidth of the filter is studied, and the optimal bandwidth of the filter is proposed and designed. According to the best bandwidth, we designed a fiber grating filter to meet the requirements.