Numerical Analysis of Relative Intensity Noise of Distributed-Feedback Fiber Lasers Considering Spatial Mode Profile

IF 2.2 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Journal of Quantum Electronics Pub Date : 2024-09-26 DOI:10.1109/JQE.2024.3468998

Xuanchen Guo;Yinyang Pei;Jianzhong Zhang

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Abstract

The spatial mode profile of distributed feedback (DFB) lasers is a unique characteristic that distinguishes them from lasers based on F-P cavities. It is utilized to achieve single-mode operation and improve relative intensity noise (RIN) performance. The effective cavity length method, as an approximate method for spatial mode profiling, is conveniently used for theoretical analysis. In this paper, the RIN of DFB fiber lasers was analyzed by considering their spatial mode profile without any approximations, and the results were compared with experimental findings. Additionally, numerical simulations of DFB fiber lasers with different structures were conducted to analyze their noise characteristics and the impact of spatial mode profile on the RIN of the lasers was discussed. The spatial mode profile was solved using the shooting method, with boundary conditions provided based on the erbium ion gain model. The spatial mode profile was then substituted into the RIN expression, yielding the RIN of DFB lasers influenced by spatial mode profile. This physical model is widely applicable and can be used to effectively analyze the dynamic characteristics of most DFB fiber laser structures.

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考虑空间模式轮廓的分布式反馈光纤激光器相对强度噪声数值分析

分布式反馈（DFB）激光器的空间模式轮廓是其区别于基于 F-P 腔的激光器的独特特征。利用它可以实现单模运行并改善相对强度噪声（RIN）性能。有效腔长方法作为空间模式剖析的近似方法，可方便地用于理论分析。本文通过不考虑任何近似值的空间模式剖面分析了 DFB 光纤激光器的 RIN，并将结果与实验结果进行了比较。此外，还对不同结构的 DFB 光纤激光器进行了数值模拟，以分析其噪声特性，并讨论了空间模式剖面对激光器 RIN 的影响。空间模式轮廓采用射击法求解，并根据铒离子增益模型提供了边界条件。然后将空间模式剖面代入 RIN 表达式，得出受空间模式剖面影响的 DFB 激光器 RIN。该物理模型具有广泛的适用性，可用于有效分析大多数 DFB 光纤激光器结构的动态特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Journal of Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.70

自引率

4.00%

发文量

审稿时长

3.0 months

期刊介绍： The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics. The Journal comprises original contributions, both regular papers and letters, describing significant advances in the understanding of quantum electronics phenomena or the demonstration of new devices, systems, or applications. Manuscripts reporting new developments in systems and applications must emphasize quantum electronics principles or devices. The scope of JQE encompasses the generation, propagation, detection, and application of coherent electromagnetic radiation having wavelengths below one millimeter (i.e., in the submillimeter, infrared, visible, ultraviolet, etc., regions). Whether the focus of a manuscript is a quantum-electronic device or phenomenon, the critical factor in the editorial review of a manuscript is the potential impact of the results presented on continuing research in the field or on advancing the technological base of quantum electronics.