超短脉冲特性对PCF中超连续谱产生的影响  

Impact of ultra-short pulse characteristic on the supercontinuum generation in photonic crystal fiber

作　　者：朱瑞莲[1] 闫连山[1] 李立广[1] 

机构地区：[1]西南交通大学信息科学与技术学院信息光子与通信实验室,成都610031

出　　处：《光通信技术》2011年第3期43-45,共3页Optical Communication Technology

摘　　要：采用分步傅立叶方法模拟了飞秒高斯脉冲在正常色散光子晶体光纤中超连续谱的产生。分析了脉冲特性对超连续谱的影响。结果表明峰值功率一定时,当脉宽小于100 fs时,脉宽变小超连续谱变宽,但是平坦性先变好后变差;当脉宽大于100 fs时,脉宽的变化对超连续谱基本没有影响;脉宽一定时,峰值功率变大超连续谱变宽,平坦性先变好后变差。Using the split-step Fourier method to simulate supercontinuum （SC） generation of femtosecond Gaussian pulses in the photonic crystal fiber with normal dispersion.The impacts of Gaussian pulse＇s peak power and pulse width on the supercontinuum generation are investigated, Analytical results indicates that when the peak power is fixed, if the pulse width is less than 100 fs, the bandwidth of supercontinuum will be wider with narrower pulses. However, the flatness of the supercontinuum degrades. The pulse width has limited effect on the supercontinuum if the pulse width is larger than 100 fs. When the pulse width is fixed, the bandwidth of supercontinuum becomes wider with higher peak power, while the flatness degrades as well.

关 键 词：光纤通信 超连续谱 光子晶体光纤 分布傅立叶 

分 类 号：TN253[电子电信—物理电子学]