利用自相位调制效应测量微结构光纤的非线性系数  

Nonlinear coefficient measurement of microstructure fiber based on self-phase modulation

作　　者：鹿晴晴[1] 徐永钊[1] 张霞[1] 黄永清[1] 任晓敏[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《量子电子学报》2008年第4期509-512,共4页Chinese Journal of Quantum Electronics

基　　金：国家重点基础研究发展计划(973)项目(2003CB314906);教育部科学技术研究重大项目基金(104046);"高等学校学科创新引智计划资助"(简称"111计划";项目编号B07005)

摘　　要：报道了利用光纤中的自相位调制(SPM)效应对微结构光纤的非线性系数进行测量的实验。实验中采用半导体激光器作为脉冲光源,输出宽度为1.6 ps的双曲正割型脉冲,经掺铒光纤放大器(EDFA)放大后进入80 m的色散平坦微结构光纤,由于自相位调制效应,出射光谱得到展宽。通过测量输入微结构光纤的脉冲峰值功率和输出光谱,可以计算得到微结构光纤的非线性系数。该测量方法简单、准确,实验测量值与光纤的标称值误差小于1%。The measurement of nonlinear coefficient of microstructure fiber based on self-phase modulation （SPM） is experimentally demonstrated. A semiconductor laser with 1.6 ps hyperbolic secant shape pulses at a repetition rate of 10 GHz is used as light source. After amplified by the EDFA, the pulses are injected into an 80-m-long dispersion-flattened microstructure fiber. The output spectra of the pulses are broadened due to SPM. By measuring the peak power of the input pulse and the output spectrum, nonlinear coefficient of microstructure fiber can be calculated. This measurement method is simple and accurate, and the error between our experimental result and the measurement result supplied by the fiber producer is within 1%.

关 键 词：光纤光学 微结构光纤 自相位调制 非线性系数测量 

分 类 号：O437[机械工程—光学工程] TN253[理学—光学]