基于交叉相位调制的堆积脉冲非线性传输

王文龙; 谭超; 傅喜泉

doi:doi:10.3788/gzxb20144308.0819003

光子学报, 2014, 43 (8): 0819003, 网络出版: 2014-09-01

基于交叉相位调制的堆积脉冲非线性传输

Nonlinear Propagation for Stacked Pulses by Cross-phase Modulation

论文大纲

王文龙 ^*谭超傅喜泉

作者单位

湖南大学信息科学与工程学院微纳光电器件及应用教育部重点实验室, 长沙 410082

摘要

基于子脉冲交叉相位调制的非线性相互作用, 利用耦合非线性传输模型, 对堆积脉冲的非线性传输和峰均比进行了研究.研究发现, 当堆积脉冲的子脉冲间存在重叠时, 在传输过程中时间相干会导致子脉冲间发生相互作用从而改变其脉冲质量.在不同的子脉冲延迟情况下, 堆积脉冲的强度和峰均比随传输距离的变化而改变, 且变化幅度均随子脉冲延迟的增大而减小.对于高斯型堆积脉冲, 当归一化子脉冲延迟大约为3时其在非线性传输过程中保持脉冲形状基本不变；而对于超高斯型的堆积脉冲, 归一化子脉冲延迟则约为2.2.

Abstract

The nonlinear propagation model was used to research the nonlinear propagation and Peak-to-Average Power Ratio (PAPR) of the stacked pulses based on cross-phase modulation between the sub-pulses. It is found that when the sub-pulses of the stacked pulse all overlapped, time-coherent will lead to interaction between the sub-pulses and change the quality of sub-pulses in the process of propagation. Under the condition of different sub-pulses delay, the intensity and PAPR of the stacked pulse occur different degrees of change during the propagation, and their variation amplitude decreases with the sub-pulses delay. For the Gaussian stacked pulse, the pulse shape can basically remain unchanged in the process of nonlinear propagation when the sub-pulses delay is about 3; while the super-Gaussian stacked pulse is about 2.2.

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王文龙, 谭超, 傅喜泉. 基于交叉相位调制的堆积脉冲非线性传输[J]. 光子学报, 2014, 43(8): 0819003. WANG Wen-long, TAN Chao, FU Xi-quan. Nonlinear Propagation for Stacked Pulses by Cross-phase Modulation[J]. ACTA PHOTONICA SINICA, 2014, 43(8): 0819003.

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