光子晶体光纤的中红外超连续谱的产生与控制  

Mid-infrared supercontinuum generated in photonic crystal fibers and its control

作　　者：施伟华[1] 曹原[1] 王梦艳 尤承杰 

机构地区：[1]南京邮电大学光电工程学院,南京210023

出　　处：《光通信研究》2015年第6期40-42,共3页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61275067);江苏省科技厅自然科学基金资助项目(BK2012830)

摘　　要：设计了一种低损耗高非线性的碲化物PCF（光子晶体光纤）.采用分布傅里叶算法求解非线性薛定谔方程,数值模拟了基于PCF的中红外波段SC （超连续谱）的产生与控制.分析了PCF参量及泵浦光源参数对SC的影响,得出SC宽度和平坦度随PCF长度、色散参量以及泵浦脉冲峰值功率、初始宽度的变化规律.仿真结果表明,中心波长为2μm、脉冲峰值功率为20kW、脉冲宽度为100fs的泵浦光在PCF中传输15cm 时,SC谱宽可达1330-3450nm,且具有良好的平坦度.A telluride Photonic Crystal Fiber(PCF)with low-loss and high nonlinearity is designed and the nonlinear Schrodinger equation is solved by using the split-step Fourier algorithm.Then,the generation and optimization of the mid-infrared Super-Continuum(SC)in the PCF is numerically simulated,the impacts of the parameters of the PCF and pump light source on the SC are analyzed and the variations of the SC width and flatness with the PCF length,dispersion parameters,the peak power value and initial width of pump pulses are obtained.The simulation results reveal that when a pump light with a center wavelength of 2μm,pulse peak power of 20 kW and pulse width of 100 fs travels in the PCF for 15 cm,the SC can span from 1 330 to 3 450 nm with good continuity and flatness.

关 键 词：光纤光学 光子晶体光纤 超连续谱 非线性 色散 

分 类 号：TN818[电子电信—信息与通信工程]