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利用传输矩阵法对啁啾光纤光栅的光学特性进行了数值求解,同时对啁啾光纤光栅进行了变迹处理,使用两种常用的变迹函数获得了较理想的光学特性,在此基础上构造了一种新的变迹函数,通过仿真结果表明,与常用的变迹函数所得到的光学特性相比,具有更宽的反射谱,更平稳的色散曲线,时延特性的线性度更好,使得啁啾光纤光栅作为色散补偿器的色散补偿性能更好。
The optical properties of chirped fiber gratings are numerically solved by transfer matrix method. At the same time, the chirped fiber gratings are apodized and two commonly used apodization functions are used to obtain the ideal optical properties. On the basis of this, A new apodization function is proposed. The simulation results show that the proposed method has a wider reflection spectrum and a smoother dispersion curve than the optical properties obtained by the conventional apodization function. The linearity of the delay characteristic is better, The chirped fiber grating is better compensated for dispersion compensation as a dispersion compensator.