光子晶体理论应用于取样光纤光栅的研究

将取样光纤光栅近似为引入多个有规律的大尺寸缺陷的一维二元光子晶体,运用光子晶体传输矩阵理论分析了其长度L、周期LA、折射率调制量δneff和采样率p等参量对其反射谱的影响规律,并将所得结果与用取样光纤光栅传输矩阵法计算所得结果进行了比较,得出了用光子晶体理论分析与用传统的模耦合理论分析相吻合的特性。在分析取样光纤光栅的其它性质以及将其应用于实际时都可借鉴此理论,以达到工程实际应用的最佳效果。

Research on sampled fiber grating based on photonic crystal theory

The sampled fiber grating is approximately considered as the one dimensional two sects photonic crystal with many well-regulated big size defects introduced.Using transfer matrix method of photonic crystal,the changing laws of the sampled fiber grating reflective spectrum are studied when the parameters such as the length L,the period LA,the refractive index modulation depth δneff and the sampling rate p change.Then,the result is compared with the result that has been obtained by transfer matrix method of sampled fiber grating,and the anastomotic characteristics of the two theories have come out.So to reach the optimal effect in engineering application,the transfer matrix theory of photonic crystal can be refered when other characteristics or application into practice of sampled fiber grating are analyzed.