Beat signal compression by loop mirror constructed with linear dispersion decreasing fiber  

作　　者：张爱玲 李长秀 张玉龙 

机构地区：[1]Key Lab. of Film Electronics and Communication Devices of Tianjin, Communications Devices and Technology Engineering Research Center of Education Ministry of China, School of Computer and Communication Engineering,Tianjin University of Technology

出　　处：《Optoelectronics Letters》2013年第3期173-176,共4页光电子快报（英文版）

摘　　要：A nonlinear optical loop mirror (NOLM) constructed with linear dispersion decreasing fiber (DDF) is used to compress a beat signal. Several factors impacting on quality of output pulse in this compression system, such as dispersion slope of DDF, power-splitting ratio, incident pulse shape and peak power, are analyzed numerically. The new method for selecting device characteristics is adopted to enable both good pedestal suppression and pulse compression. As a result, the output pulse train with tunable and high repetition rate, pedestal energy of 5.09%, compression ratio of 25.6 and energy transmissivity of 50.56% is obtained by using 0.524 km-long DDF with dispersion slope of 26 ps^2/km^2 and a coupler with power-splitting ratio of 0.54.A nonlinear optical loop mirror （NOLM） constructed with linear dispersion decreasing fiber （DDF） is used to com press a beat signal. Several factors impacting on quality of output pulse in this compression system, such as dispersion slope of DDF, powersplitting ratio, incident pulse shape and peak power, are analyzed numerically. The new method for selecting device characteristics is adopted to enable both good pedestal suppression and pulse compression. As a result, the output pulse train with tunable and high repetition rate, pedestal energy of 5.09%, compression ratio of 25.6 and energy transmissivity of 50.56% is obtained by using 0.524 kinlong DDF with dispersion slope of 26 ps2/km2 and a coutler with oowersolittin ratio of 054

关 键 词：非线性光纤环镜 色散渐减光纤 信号压缩 能量透射率 输出脉冲 色散斜率 DDF NOLM 

分 类 号：TN253[电子电信—物理电子学]