光学学报, 2013, 33 (7): 0729002, 网络出版: 2013-07-01
低双折射光纤中拉曼效应对增益谱的影响
Raman Effect on Gain Spectrum in Low-Birefringence Fiber
摘要
利用光脉冲在非线性光纤中传播时所满足的波动方程,导出了在拉曼效应和参量放大共同作用下,激光脉冲在低双折射光纤中传输时所满足的耦合模方程。给出了沿光纤的快轴输入线偏振光抽运时,在拉曼效应和参量放大共同作用下的增益。结果表明,拉曼效应可导致参量放大下的斯托克斯波与反斯托克斯波的增益谱由对称变为不对称。输入不同的功率或传输常数差,增益谱的峰值和位置均会随之发生变化。
Abstract
According to the wave equation of the optical pulse propagating in the nonlinear fiber, the nonlinear coupled equations is deduced under the Raman effect and the parametric amplification in the low-birefringent fiber. The gain spectra is obtained from the coaction of Raman effect and parametric amplification when the pump linearly polarized along the fast axis of low-birefringent fiber. The results show that the Raman effect can lead to asymmetric of Stokes and anti-Stokes gain spectra. The maximum value and location of the gain spectra are different when power of input pulse and propagation constant are variable.
韩凤, 贾维国, 柴宏宇, 张俊萍, 门克内木乐, 杨军. 低双折射光纤中拉曼效应对增益谱的影响[J]. 光学学报, 2013, 33(7): 0729002. Han Feng, Jia Weiguo, Chai Hongyu, Zhang Junping, Menke Neimule, Yang Jun. Raman Effect on Gain Spectrum in Low-Birefringence Fiber[J]. Acta Optica Sinica, 2013, 33(7): 0729002.