取样光纤Bragg光栅的理论分析  

Theoretical Analysis of Sampled Fiber Bragg Gratings

作　　者：鲁韶华[1] 许鸥[1] 董小伟[1] 李彬[1] 简水生[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《北京交通大学学报》2007年第5期11-14,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(60477017);北京市自然科学基金资助项目(4052023);新世纪优秀人才支持计划(NCET-05-0091)

摘　　要：根据Turan Erdogan耦合模理论,从普通单模光纤Bragg光栅的耦合模方程出发,推导了前向基模与后向基模的幅度、均匀光栅反射率及传输矩阵的表达式,并且为了方便传输矩阵的推导,在边界条件的处理上采用了与一般文献不同的方法.在此基础上用传输矩阵法对取样均匀光纤Bragg光栅进行了理论分析,并依据此方法对取样光栅的反射谱进行了数值仿真,通过对仿真结果的比较,总结了"净光栅"长度、占空比T、取样周期p等参数对取样光栅反射谱特性的影响.By solving coupled-mode equations based on Turan Erdogan＇s coupled-mode theory, the amplitudes of co-propagating mode and counter-propagating mode in a single-mode fiber grating are given, as well as the reflective ratio and the transfer matrix, These are deduced by using boundary condition different from other papers, The sampled uniform fiber gratings are theoretically analyzed and numerically simulated with the transfer matrix method. According to the simulation results, relations between reflective spectra and parameters such as “compressed” length, duty cycle and sampling period are discussed

关 键 词：光纤器件 取样光纤光栅 传输矩阵法 耦合模理论 

分 类 号：TN929.11[电子电信—通信与信息系统]