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

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....

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Bibliographic Details
Published in红外与毫米波学报 Vol. 34; no. 2; pp. 196 - 202
Main Author 贾楠 李唐军 孙剑 钟康平 王目光
Format Journal Article
LanguageChinese
Published 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 2015
Subjects
光波分裂
平坦性
自相位调制
超连续谱
SPM
光波分裂
supercontinuum
flatness
平坦性
自相位调制
OWB
超连续谱
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ISSN1001-9014
DOI10.11972/j.issn.1001-9014.2015.02.013

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Summary: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.
Bibliography: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 supercontinu- um. 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.
JIA Nan, LI Tang-Jun, SUN Jian, ZHONG Kang-Ping, WANG Mu-Guang （ Key Laboratory of All OptiCal Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China）
31-1577/TN
supercontinuum, SPM, OWB, flatness
ISSN:1001-9014
DOI:10.11972/j.issn.1001-9014.2015.02.013