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高非线性光纤正常色散区皮秒脉冲泵浦产生的超连续谱平坦性
引用本文:贾楠,李唐军,孙剑,钟康平,王目光. 高非线性光纤正常色散区皮秒脉冲泵浦产生的超连续谱平坦性[J]. 红外与毫米波学报, 2015, 34(2): 196-202
作者姓名:贾楠  李唐军  孙剑  钟康平  王目光
作者单位:北京交通大学光波技术研究所,全光网络与现代通信网教育部重点实验室,北京100044
基金项目:国家自然科学基金(61475015, 60807003);北京高等学校青年英才计划项目(YETP0528);新世纪优秀人才支持计划资助(NCET-09-0209)
摘    要:数值仿真研究了双曲正割、高斯(m=1)、超高斯脉冲(m=5)形皮秒脉冲泵浦在高非线性光纤正常色散区中时频域演化特性.计算结果表明,在峰值功率、泵浦光纤参数相同的条件下,泵浦脉冲前(后)沿陡峭程度影响频谱展宽宽度,脉冲前后沿越陡峭,生成的超连续谱带宽越宽;脉冲前(后)沿的拖尾部影响展宽频谱的平坦性,脉冲前后沿拖尾越小,生成的超连续谱频带平坦度越高.泵浦脉冲中是否含有啁啾对生成的超连续谱的带宽和平坦性影响微弱.脉冲前(后)沿拖尾小或者陡峭的脉冲在高非线性光纤正常色散区可以产生带宽平坦的超连续谱.

关 键 词:超连续谱  自相位调制  光波分裂  平坦性
收稿时间:2014-01-03
修稿时间:2015-02-05

Flatness of supercontinuum generated by a picosecond pulse in normal dispersion region of highly nonlinear fiber
JIA Nan,LI Tang-Jun,SUN Jian,ZHONG Kang-Ping and WANG Mu-Guang. Flatness of supercontinuum generated by a picosecond pulse in normal dispersion region of highly nonlinear fiber[J]. Journal of Infrared and Millimeter Waves, 2015, 34(2): 196-202
Authors:JIA Nan  LI Tang-Jun  SUN Jian  ZHONG Kang-Ping  WANG Mu-Guang
Affiliation:Beijing Jiaotong University,the Key Laboratory of All Optical Network DdDd Advanced Telecommunication of EMC, Institute of Lightwave Technology, Beijing Jiaotong University,the Key Laboratory of All Optical Network DdDd Advanced Telecommunication of EMC, Institute of Lightwave Technology, Beijing Jiaotong University,the Key Laboratory of All Optical Network DdDd Advanced Telecommunication of EMC, Institute of Lightwave Technology, Beijing Jiaotong University,Beijing Jiaotong University
Abstract:The evolutional waveforms and spectrograms of sech, gaussian pulse (m=1) and supergaussian pulse (m=5) generated in normal dispersion region of high nonlinear fiber were numerically studied. The results indicate that the tail at both front and back edge of the pulse not only affects spectrum broadening, but also the flatness of supercontinuum. The chirp of pump pulse has little impacts on the generated supercontinuum. The pulse with high power, steep edge and small tail is preferable to generate wideband and flat supercontinuum.
Keywords:supercontinuum   SPM   OWB   flatness
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