不同剖面色散缓变光纤中高斯脉冲宽度研究  

Gaussian Pulse Width in Dispersion Decreasing Fiber with Different Profiles

作　　者：任志君[1] 应朝福[1] 王辉[1] 毛和法[1] 董亮伟[1] 马利红[1] 钱惠国[1] 

机构地区：[1]浙江师范大学信息光学研究所,浙江金华321004

出　　处：《光电子．激光》2006年第7期813-816,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60477039);浙江省教育厅科研资助项目(20050275)

摘　　要：理论推导了高斯脉冲在5种群色散剖面色散缓变光纤（DDF）中传输时的展宽因子。对比5种剖面DDF传输20km后的展宽因子发现：与常规的单模光纤（SMF）相比，任何一种DDF均能有效抑制高斯脉冲展宽；高斯型、线型和对数型DDF展宽程度基本相近，大约展宽了2．0～2．6倍；指数型DDF只展宽了约1．4倍，性能明显优于上述3种光纤；双曲线型DDF的效果最好，仅展宽了约1．05倍，基本实现无畸变稳定传输。The spreading factors are theoretically derived when a Gaussian pulse propagates in dispersion decreasing fibers（DDF） with different group dispersion profiles. The results show that every DDF can effectively restrain the pulse widening compared with the standard single-mode fiber（SMF） when a pulse propagates 20 km in the fiber. The pulse approximately widens by 2.0-2.6 times in a 20 km Gaussian or linear or logarithm DDF. The pulse approximately widens by 1.4 times in a 20 km exponential DDF whose performance is better than that of a Gaussian or linear or logarithm DDF. Especially for a hyperbolic DDF a pulse widens by 1.05 times. It is shown that a pulse can almost steadily propagate without aberration in a hyperbolic DDF.

关 键 词：色散缓变光纤(DDF) 高斯脉冲 群色散剖面 

分 类 号：TN253[电子电信—物理电子学]