摘要
本文给出了描述皮秒脉冲在色散缓变单模光纤中孤子效应压缩过程的数学模型．通过数值求解，首次对该孤子效应压缩进行了全面的计算和分析．结果表明，与常规光纤相比，采用色散缓变程度合适的光纤压缩皮秒脉冲，不仅能显著地提高压缩后脉冲的峰值功率和脉冲压缩比，而且能有效地消除压缩后脉冲的次峰和脉座．对于确定的脉冲输入，发现，当光纤的色散缓变程度取某一最佳值时，能获得最佳的压缩效果．进一步研究表明，色散的这一最佳变化与输入脉冲的峰值功率和脉冲宽度有关．
mathematic model is obtained for the description of soliton- effectcompression of picosecond pulse in optical fibers with slowly decreasing dispersion.Numerical simulations show that, as compared with the case of conventional solitoneffect comptessor, the compressed pulse from this kind of compressor is much short6r witha much higher ark power when the decrement velocity of the fiber dispersion isappropriately controlled. Furthermore, the compressed pulse is pedestal free. Given inputpulse, we found that the highest peak power and the highest comptession ratio correspondto an optimal decrement velocity of the fiber dispersion which relates not only to theinitisl peak power but also tO the initial pulse width of the input pulse.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1994年第2期118-124,共7页
Acta Optica Sinica
关键词
单模光纤
脉冲压缩
孤立子
光纤
single-mode fiber with slowly decreasing dispersion
picosecond pulses
solitons
pulse compression.
