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基于相位共轭及交叉相位共轭反馈的耦合激光器混沌增频

Enhancing Chaotic Frequency of Coupled Lasers Based on Phase Conjugation and Cross-Phase Conjugation Feedback

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摘要

提出了一种基于相位共轭及交叉相位共轭反馈半导体激光器的耦合非线性动力学系统,分析了频率失谐及频率增强原理,研究了4个相位共轭反馈技术方案并进行两激光器混沌增频。研究结果表明,当利用相位共轭反馈对单个激光器进行混沌增频时,增频效果显著增强到原来的4倍;当利用相位共轭双反馈对两耦合激光器同时进行混沌增频时,增频效果达到原来的5倍以上,且谱线明显展宽;当利用相位共轭交叉反馈对激光器进行混沌增频时,激光器混沌振荡频率可被显著增加到原来的4.4倍;当利用相位共轭双交叉反馈对两个激光器同时进行混沌增频时,两激光器混沌振荡频率同时显著增加到原来的4倍或6倍,频谱明显展宽。此外,还提出了一种利用相位共轭双交叉反向反馈增加激光器混沌振荡频率的方法,研究结果表明:随着反馈量的增加,两激光器混沌振荡频率增加,最大可增加到原来的4.2倍或5.9倍,且频谱显著展宽。

Abstract

A coupling nonlinear dynamic system based on semiconductor lasers with phase conjugation and cross-phase conjugation feedback is presented. The principles of frequency detuning and frequency enhancement are analyzed, and four phase conjugation feedback schemes for frequency enhancement of two chaotic lasers are studied. It is found that the chaotic spread frequency effect of the laser can be increased to 4 times when the phase conjugation feedback is applied to a single laser. When the chaotic frequencies of two coupled lasers are increased with phase conjugation double-feedback, it is found that the frequencies of chaotic oscillation are obviously increased to more than 5 times and spectra are obviously broadened. When the cross-phase conjugation feedback is operated on a laser, the chaotic oscillation frequency can be increased to 4.4 times. When the cross-phase conjugation feedback is operated on two lasers, the chaotic oscillation frequencies of the two lasers are increased significantly, which can be increased to 4 times or 6 times, and the spectra are greatly broadened. In addition, a method for increasing the chaotic oscillation frequency is proposed based on phase conjugation double-cross reverse feedback. Results show that the chaotic oscillation frequencies of the two lasers can increase to 4.2 times or 5.9 times with the increasing feedback level, and the spectra are effectively widened.

Newport宣传-MKS新实验室计划
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DOI:10.3788/CJL201946.0808003

所属栏目:非线性光学

基金项目:江苏省自然科学基金;

收稿日期:2019-03-07

修改稿日期:2019-04-19

网络出版日期:2019-08-01

作者单位    点击查看

颜森林:南京晓庄学院电子工程学院, 江苏 南京 211171

联系人作者:颜森林(senlinyan@163.com)

备注:江苏省自然科学基金;

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引用该论文

Senlin Yan. Enhancing Chaotic Frequency of Coupled Lasers Based on Phase Conjugation and Cross-Phase Conjugation Feedback[J]. Chinese Journal of Lasers, 2019, 46(8): 0808003

颜森林. 基于相位共轭及交叉相位共轭反馈的耦合激光器混沌增频[J]. 中国激光, 2019, 46(8): 0808003

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