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比较了光纤布拉格光栅法布里-珀罗腔的极限法、平衡法及传输矩阵法3种算法,证明了它们是一致的,指出了光纤布拉格光栅复振幅传输矩阵的相移特性对法布里-珀罗腔透射率的影响。对计算任意折射率调制的光纤布拉格光栅的Rouard算法进行了改进,在分层方法中考虑了折射率分布初始相位的影响,获得了更为准确的反射复振幅相位特性,将该结果应用于计算光纤布拉格光栅法布里-珀罗腔,得到了光纤布拉格光栅法布里-珀罗腔具有多峰结构的透射谱,并经过实验验证了该理论的正确性。
Comparing the limit method, the balance method and the transfer matrix method of the fiber Bragg grating Fabry-Perot cavity, we prove that they are consistent, and point out that the phase-shift characteristic of the fiber Bragg grating complex amplitude transfer matrix Effect of Perot Cavity Transmittance. The Rouard algorithm for calculating fiber Bragg gratings with arbitrary refractive index modulation is improved. The influence of the initial phase of the refractive index distribution is considered in the layering method, and the phase characteristics of the complex complex amplitude are obtained more accurately. The result is applied to the calculation Fiber Bragg grating Fabry - Perot cavity, the fiber Bragg grating Fabry - Perot cavity has a multimodal transmission spectrum, and the experimental results verify the correctness of the theory.