熔锥型光纤反射器特性研究  

Properties of the fused silicon fiber-reflector

作　　者：余有龙[1] 曹雪[2] 刘盛春[2] 陈雪峰[2] 

机构地区：[1]合肥工业大学仪器科学与光电工程学院,合肥230009 [2]黑龙江大学光纤技术研究所,哈尔滨150080

出　　处：《物理学报》2007年第11期6490-6495,共6页Acta Physica Sinica

基　　金：教育部"新世纪优秀人才支持计划"项目(批准号:NCET-04-0828);广东省自然科学基金重点项目(批准号:04105843)资助的课题.~~

摘　　要：分析并验证了光纤反射器的透过率在[0,1]范围内与耦合器耦合比偏离50∶50的程度呈二次曲线关系.环形腔中光纤的弯曲对透过率的影响不大,然而径向挤压和扭转通过双折射对透过率的影响比较明显,环境温度则通过耦合比来影响透过率.宽带3dB耦合器构成的反射器,对宽带光波几乎具备"全反射"功能.透过光形成的初期会出现一个脉冲,脉冲的上升沿时间和下降沿时间随入射光强的增加而缩短,脉宽与稳态输出光强则随入射光强的增加而增大.　Within the range from 0 to 1,the transmissivity of fused tapered fiber reflector as a conic function of the departure of the coupling-ratio from 50∶50 was examined theoretically and experimentally.Bending the fiber in loop-cavity causes no obvious change.However,twist and the radial pressure change the transmissivity,obviously,producing birefringence in the fiber core.Temperature changes the transmissivity through the induced departure of the coupling-ratio.Constructed with a broad-band 3dB fused tapered fiber coupler,the reflector shows total reflection.A pulse was observed at the beginning of the formation of the transmitted beam.Increasing the input intensity causes,the rise-time and the fall-time of the pulse to decrease,while the width of the pulse and the steady state value of the transmitted power to increase.

关 键 词：光纤反射器 光纤无源器件 光纤双折射 耦合器 

分 类 号：TN820.84[电子电信—信息与通信工程] TN253