X型光纤耦合器的回波干涉研究  

Research on Return Wave Interference of X-type Optical Fiber Coupler

作　　者：杨嘉[1] 张天浩[1] 杨会战[1] 路彦珍[1] 张春平[1] 孙媛媛[2] 夏秀兰[3] 

机构地区：[1]南开大学物理科学学院光子学中心,天津300071 [2]天津理工学院材料物理研究所,天津300191 [3]天津理工学院光电系,天津300191

出　　处：《光电子．激光》2003年第9期933-935,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60208002)

摘　　要：理论分析了X型光纤耦合器(OFC)回波噪声的周期性振荡产生的原因,对两光纤端面的菲涅尔反射的多光束干涉效应进行计算,得到回波信号强度与光纤端面间隔的依赖关系。实验观测了回波信号随着光纤端面间距的变化,其依赖关系呈现出周期性,并与理论分析较好地吻合。The reason that the noise of the return wave of X-type optical fiber coupler (OFC) fluctuates periodically was analyzed theoretically and observed experimentally. We took a calculation of the multiple beam interference effect of the Fresnel reflection on the interface between two fibers, and got the dependence of the return wave signal intensity on the spacing between two fibers interface. The change of return wave signal with respect to the change of two fibers spacing was observed in our experiment, and it turned out to be that the dependence is periodical and the experimental results agree with the theoretic analysis very well.

关 键 词：光纤耦合器 回波干涉 OFC 回波噪声 多光束干涉 光纤端面 周期性振荡 

分 类 号：TN253[电子电信—物理电子学]