长周期啁啾光纤光栅级联作为波分复用隔离滤波器的数值研究

用矩阵传输法对长周期啁啾光纤光栅用于波分复用隔离滤波器的特性进行了分析，讨论了设计该类型高性能的波分复用隔离滤波器的关键技术，给出了仿真结果，表明该类型滤波器具有大的可用带宽、频率等间隔、隔离度高和通带内的色散可以忽略等优点,并指出通过调谐级联长周期光纤光栅之间的光纤长度可以实现频率间隔的调谐.

Numerical Simulation to Wavelength-division Multiplexing Isolation Filter Using Concatenated Long Period Chirped Fiber Grating

An analysis about the wavelength-division multiplexing isolation filter using concatenated long period chirped fiber grating by transmission matrix method is given. The key factors of design high performance of such type filter are proposed. The simulation result demonstrates that such type isolation filter have a very large band width, equal frequency spacing, high isolation, and with a neglect dispersion in the band pass, and the frequency spacing can be tuned by tuning the fiber length between the concatenated long period chirped fiber gratings.