Laser & Optoelectronics Progress, Volume. 58, Issue 19, 1914005(2021)
Study on Random Characteristic of Chaotic Output of Ytterbium-doped Fiber Amplifier
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.
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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
Category: Lasers and Laser Optics
Received: Feb. 1, 2021
Accepted: Feb. 12, 2021
Published Online: Oct. 14, 2021
The Author Email: Yang Lingzhen (office-science@tyut.edu.cn)