激光与光电子学进展, 2021, 58 (19): 1914005, 网络出版: 2021-10-14  

掺镱光纤放大器混沌输出随机特性研究 下载: 543次

Study on Random Characteristic of Chaotic Output of Ytterbium-doped Fiber Amplifier
作者单位
1 太原理工大学物理与光电工程学院,山西 太原 030024
2 太原理工大学新型传感器与智能控制教育部重点实验室,山西 太原 030024
摘要
对混沌激光在放大过程中的随机特性进行了实验研究。基于光纤中的非线性克尔效应,通常采用环形腔结构来产生混沌激光。通过控制泵浦源电流实现了不同功率混沌激光的输出,并利用掺镱光纤放大器进行放大。然后,利用排列熵、偏度和峰度对混沌激光放大过程中的随机特性进行了定量分析。结果表明:排列熵随光纤放大器泵浦电流的增大而减小并趋于一个稳定值;在排列熵相近时,偏度和峰度随光纤放大器泵浦电流的增大呈先增大后减小的趋势,即放大过程中混沌激光的随机特性先减小后增加。
Abstract
The experimental study on the random characteristic of chaotic laser in the amplification process is carried out. A ring cavity structure is usually applied to generate chaotic laser based on the nonlinear Kerr effect in fiber. The outputs of chaotic laser with different powers are realized by controlling pump current, and they are amplified by ytterbium-doped fiber amplifier. Then, the random characteristic of chaotic laser in the amplification process is analyzed quantitatively by permutation entropy, skewness and kurtosis. The results show that the permutation entropy decreases with the increase of the pump current of the fiber amplifier and tends to a stable value. The skewness and kurtosis first increase and then decrease with the increase of the pump current of the fiber amplifier when the permutation entropy is similar, indicating that the random characteristic of the chaotic laser first decreases and then increases during the amplification process.

祝王华, 杨玲珍, 任静峰, 李佳, 吴天龙, 王娟芬. 掺镱光纤放大器混沌输出随机特性研究[J]. 激光与光电子学进展, 2021, 58(19): 1914005. Wanghua Zhu, Lingzhen Yang, Jingfeng Ren, Jia Li, Tianlong Wu, Juanfen Wang. Study on Random Characteristic of Chaotic Output of Ytterbium-doped Fiber Amplifier[J]. Laser & Optoelectronics Progress, 2021, 58(19): 1914005.

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