论文部分内容阅读
提出了一种利用光纤布里渊散射效应抑制光反馈半导体激光器时延特征的方法。实验研究发现,当平均功率为200mW的混沌激光注入到长为10km的单模光纤中,经过光纤的后向布里渊散射作用,混沌激光自相关曲线在时延105ns处的峰值从0.251降低到0.075,互信息曲线在时延105ns处的峰值从0.087降低到0.008。在此基础上,实验分析了注入光功率对混沌激光时延特征抑制效果的影响,结果表明,当混沌激光注入的平均功率在200~1500mW范围内时,混沌激光的时延特征得到有效抑制;当测量次数在1~50范围内时,光纤布里渊散射对混沌激光时延特征的抑制效果较稳定。
A method of suppressing the delay characteristic of the optical feedback semiconductor laser by using Brillouin scattering in fiber is proposed. Experimental results show that when the average power of 200mW chaotic laser is injected into a single-mode fiber of 10km in length, the peak of the autocorrelation curve of the chaotic laser at a time delay of 105ns decreases from 0.251 to 0.075, the peak of the mutual information curve decreases from 0.087 to 0.008 at a delay of 105 ns. On this basis, the effect of injected optical power on the suppression of chaotic laser time-delay characteristics is experimentally analyzed. The results show that when the average power of chaotic laser injection is in the range of 200 ~ 1500mW, the chaotic laser delay characteristics are effectively suppressed. When the number of measurements in the range of 1 ~ 50, the optical fiber Brillouin scattering chaotic laser delay characteristics of the inhibition is more stable.