高非线性光子晶体光纤环镜的脉冲压缩研究  

Study on Pulse Compression in High Nonlinear Optical Loop Mirror Based on Photonic Crystal Fiber

作　　者：杨敏[1] 夏锴[1] 

机构地区：[1]长江师范学院物理学与电子工程学院,重庆涪陵408100

出　　处：《西南师范大学学报（自然科学版）》2013年第9期40-43,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：重庆市教委科学技术研究项目(KJ101313)

摘　　要：在对高非线性光子晶体光纤特性研究基础上,设计了用此光纤制成的光纤环镜实现光脉冲压缩的方法.数值模拟结果表明:利用此环镜可实现对脉冲的压缩,与其他压缩方法相比,压缩后的脉冲输出波形质量好,压缩所需的光纤长度大大减短.研究发现,随着光子晶体光纤非线性系数及泵浦脉冲功率的增大,其压缩到最佳质量所需的光纤长度减小.研究还表明脉冲压缩比与光纤环镜的分光比有关,当分光比为0.5时压缩比最高.Based on study of characteristics of high nonlinear photonic crystal fiber （PCF）, the pulse com-pression scheme has been designed by means of high nonlinear optical loop mirror （NOLM） which is made of PCF. The numerical simulation results show that the pulse compression can be realized. Compared with other compression method, the output waveform quality is better and the length of fiber that compression needed is shorter greatly. The study reveals the larger the nonlinear coefficient and pump power are, the shorter the fiber length which best compression needed is. It also shows that the compression factor is re lated to splitting ratio of NOLM and when the splitting ratio is 0.5, the effect is best.

关 键 词：光子晶体光纤 非线性光纤环镜 脉冲压缩 非线性系数 

分 类 号：TN929.11[电子电信—通信与信息系统]