Chai Quan, Liu Yanlei, Zhang Jianzhong, Yang Jun, Chen Yujin, Yuan Libo, Peng Gang-Ding
Opt Express. 2015 May 4;23(9):11665-73. doi: 10.1364/OE.23.011665.
We give a comprehensive theoretical analysis and simulation of a FBG in single-multi-single mode fiber structure (FBG-in-SMS), based on the coupled mode analysis and the mode interference analysis. This enables us to explain the experimental observations, its asymmetric transmission and reflection spectra with the similar temperature responses near the spectral range of Bragg wavelengths. The transmission spectrum shift during FBG written-in process is observed and discussed. The analysis results are useful in the design of the SMS structure based sensors and filters.
基于耦合模分析和模式干涉分析，我们对单-多-单模光纤结构中的光纤布拉格光栅（FBG-in-SMS）进行了全面的理论分析和仿真。这使我们能够解释实验观测结果，即其在布拉格波长光谱范围附近具有相似温度响应的不对称透射和反射光谱。观测并讨论了FBG写入过程中的透射光谱偏移。分析结果对基于SMS结构的传感器和滤波器设计具有重要意义。
