激光技术, 2010, 34 (2): 218, 网络出版: 2010-05-06
脉冲在非线性渐增光纤中自相似演化的研究
Study of the self-similar evolution for optical pulse in nonlinearity-increasing fibers
非线性光学 非线性渐增光纤 数值模拟 自相似抛物脉冲 线性啁啾 脉冲压缩 nonlinear optics nonlinearity-increasing fiber numerical simulation self-similar parabolic pulse linear chirp pulse compression
摘要
为了研究超短脉冲在非线性渐增光纤中自相似演化的特性,采用理论分析与数值模拟的方法,对脉冲在非线性渐增光纤中的传输演变进行了数值仿真。结果表明,脉冲在非线性渐增光纤中的传输与在具有放大增益的光纤或色散渐增光纤中一致,均能实现脉冲的自相似演化,最终演化为具有良好线性啁啾特性抛物形脉冲,仿真结果验证了脉冲在非线性渐增光纤中的传输方程具有渐进解。由于输出抛物脉冲具有良好的线性啁啾,此研究结果对实现高质量的脉冲压缩是有帮助的。
Abstract
The propagation and evolution characteristics of ultra-short pulses in a nonlinearity-increasing fiber were studied based on theoretical analysis and numerical calculation. Numerical simulation shows that the propagation in a nonlinearity-increasing fiber is similar with that in a gain-amplification fiber or dispersion fiber,i.e.,the propagation and evolution accords with the self-similar evolution. Finally the parabolic pulse with linear chirp can be achieved. The result is useful for pulse compression because the parabolic pulse has linear chirp.
陈海涛, 王飞, 邓涛. 脉冲在非线性渐增光纤中自相似演化的研究[J]. 激光技术, 2010, 34(2): 218. CHEN Hai-tao, WANG Fei, DENG Tao. Study of the self-similar evolution for optical pulse in nonlinearity-increasing fibers[J]. Laser Technology, 2010, 34(2): 218.