摘要
文章提出了一种基于正常色散递减光纤(ND-DDF)、单模光纤(SMF)和非线性环镜 (NOLM)组成的全光纤超短脉冲压缩方案。利用光脉冲在正常色散区的色散递减光纤(ND- DDF)中传输时,在脉冲的中心部分将带上较大线性正啁啾(和普通光纤相比),当脉冲在SMF 中传输时色散致啁啾对其进行补偿从而有一个脉冲压缩的过程,最后利用NOLM对压缩后的 脉冲进行进一步的压缩和消基座处理。数值模拟的结果表明:半峰全宽为10ps、能量为74pJ 的高斯脉冲经过1 km的DDF、79m的SMF和20m的NOLM后,可以获得峰值功率为210W,半 峰全宽为120fs且几乎无基座的超短脉冲。
A novel designed model of optical pulse compressor, which is based on the dispersion decreasing fiber in the normal-dispersion regime （ND-DDF）, single mode fiber （SMF） and nonlinear optical fiber loop mirror （NOLM）, has been presented in the paper. A pulse, whose central part is linear up-chirp generated from propagating in the ND- DDF, will be compressed in a single mode fiber with reasonable length by the chirp caused by the dispersion, and a nonlinear optical fiber mirror is used for further compression and pedestal suppression. Numerical simulation shows that a Gaussian pulse,whose pulse width is 10ps and energy is 74p J, can be compressed to a 120fs-width,210W-peakpower pulse and without pedestal by using a 1Kin ND-DDF, a 79m SMF and a 20m NOLM.
出处
《激光与红外》
CAS
CSCD
北大核心
2005年第12期958-961,共4页
Laser & Infrared
基金
重庆市自然科学基金项目西南师范大学博士基金项目。
关键词
非线性光学
光脉冲压缩
色散递减光纤
非线性环境
单模光纤
nonlinear optics
optical pulse compression
dispersion decreasing fibers
nonlinear optical fiber loop mirror
single mode fiber
