色散渐减光纤组成的环形镜对高阶孤子的理想压缩

利用数值模拟方法证明，采用色散渐减光纤组成的非线性光纤环形镜不仅可压缩高阶光孤子，而且能有效地消除压缩后脉冲的底座、提高光脉冲的输出能量.研究表明，对于一确定的色散渐减光纤，只要选取不同环形镜长度，即可对不同阶数的高阶孤子进行理想压缩.且孤子阶数越高，所需最佳环形镜长度越短、压缩后光脉冲的峰值强度越大、能量透射率越低.研究同时发现，环形镜的功率分束比存在一最佳值，在此值下所得压缩后的光脉冲不仅具有较大的峰值及能量透射率，且不含底座.

Optimal Compression of Higher-order Soliton with a Nonlinear Optical loop Mirror Constructed from Dispersion-decreasing Fiber

A nonlinear optical loop mirror constructed from dispersion-decreasing fiber is proposed for simultaneous compression and pedestal suppression of higher-order soliton. Numerical simulation indicates that with the different soliton order, we can use the different fiber length for optimum compression. It is found that the higher of the soliton order, the shorter of the fiber length for optimal compression, with the greater peak intensity and the lower energy transmissivity. Our research results also show that the power-splitting ratio of the loop for optimal compression can be obtained, under this condition, the peak intensity and energy transmissivity of the pulse compressed is greater, and the pedestal is efficiently suppressed.