中国激光, 2020, 47 (7): 0706003, 网络出版: 2020-07-10
光纤中飞秒双脉冲束缚态产生超连续谱的研究 下载: 1013次
Study on Supercontinuum Generation of Femtosecond Double Pulses Bound-State in Optical Fiber
超连续谱 单模光纤 双脉冲束缚态 非线性光学 supercontinuum single-mode optical fiber double pulses bound-state nonlinear optics
摘要
通过广义非线性薛定谔方程,数值模拟了fs量级的双高斯脉冲束缚态和双艾里脉冲束缚态在高非线性单模光纤中传输产生的超连续谱特性。模拟结果表明,由于艾里脉冲具有自愈特性,双艾里脉冲束缚态产生的超连续谱要比双高斯脉冲束缚态产生的超连续谱更宽、更平坦。研究了双脉冲束缚态中子脉冲间隔对超连续谱的影响,发现当子脉冲间隔增大时,产生的超连续谱先变宽,再变窄,最后基本保持不变。表明存在一个最佳子脉冲间隔,使产生的超连续谱最宽,这对选择合适的双脉冲束缚态子脉冲间隔、优化超连续谱具有重要意义。
Abstract
By using the generalized nonlinear Schr?dinger equation, the supercontinuum characteristics of fs level double Gaussian pulses bound-state and double Airy pulses bound-state in highly nonlinear single-mode optical fiber are simulated. Simulation results demonstrate that, because of the self-healing properties of Airy pulse, the output supercontinuum generated by the double Airy pulses bound-state is wider and flatter than that generated by the bound state of double Gaussian pulses bound state. The influence of sub-pulse interval of the double pulses bound-state on supercontinuum generation is studied. It is found that when the sub-pulse interval increases, the spectrum widens first, then narrower, and finally remains unchanged. It is shown that there is an optimal sub-pulse interval to produce the widest supercontinuum, which is of great significance to select the appropriate sub-pulse interval of the double pulses bound-state and optimize the supercontinuum
邹宝英, 戴佳男, 洪伟毅. 光纤中飞秒双脉冲束缚态产生超连续谱的研究[J]. 中国激光, 2020, 47(7): 0706003. Zou Baoying, Dai Jianan, Hong Weiyi. Study on Supercontinuum Generation of Femtosecond Double Pulses Bound-State in Optical Fiber[J]. Chinese Journal of Lasers, 2020, 47(7): 0706003.