光脉冲在孔硅波导中的非线性调制过程与波形特征分析  

Analysis on Nonlinear Modulation Processes and Shape Characteristics of Optical Pulse in Porous Silicon Waveguide

作　　者：杨婵[1] 雷瑶[1] 吴建伟[1] 

机构地区：[1]重庆师范大学物理与电子工程学院,重庆401331

出　　处：《量子光学学报》2016年第1期81-87,共7页Journal of Quantum Optics

基　　金：国家自然科学基金(61205111);重庆市教委科学技术项目(KJ130633)

摘　　要：研究了具有不同中心载波波长的高功率双脉冲在微纳孔硅波导中的非线性光学过程和输出脉冲在时域与频域的波形特征。结果表明,由于双光子吸收、自由载流子吸收、自由载流子色散、自相位调制和交叉相位调制的非线性效应作用,在波导输出端,目标脉冲的不对称时域和频域脉冲波形被观察,而且脉冲波形的改变依赖于注入功率、初始宽度、波导长度和脉冲时延参数。Both nonlinear optical processes of high power double pulses at various central wavelengths and properties of time and frequency domain shapes of output pulses were investigated based on the micro/nano porous silicon waveguides.Results show that,due to nonlinear effects including two-photon absorption（TPA）,free carrier absorption（FCA）,free carrier dispersion（FCD）,self-phase modulation（SPM）,and cross-phase modulation（XPM）,time and frequency domain asymmetrical shapes of outcome pulses are observed at output port of waveguide.Furthermore,the changes of pulse shapes are dependent on the parameters such as incident power,initial temporal width,waveguide length and pulse delay.

关 键 词：非线性光学 孔硅波导 双脉冲 非线性效应 

分 类 号：O437[机械工程—光学工程]