Theoretical Analysis of Phase Noise in Laser With 1/fα FM Noise for Self-Homodyne Coherent System

被引：2

作者：

Gao, Yuyuan ^{[1
]}

Zhou, Xian ^{[1
]}

Liu, Fei ^{[1
]}

Fang, Qianwen ^{[1
]}

Wang, Shiyao ^{[1
]}

Li, Feiyu ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Engn & Technol Res Ctr Convergence Networ, Beijing 100083, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2023年 / 41卷 / 22期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Frequency modulation; Laser noise; Phase noise; Laser theory; Fourier transforms; Signal to noise ratio; Measurement by laser beam; Flicker FM noise; phase noise; self-homodyne coherent;

D O I：

10.1109/JLT.2023.3294488

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The demand for high-speed transmission in intra- and inter-datacenter applications continues to grow, requiring a system capable of transmitting beyond 400 Gbit rates per wavelength. The self-homodyne coherent (SHC) system is a cost-effective candidate that has gained growing interest. According to this system, we rigorously examine the characterization of lasers with white and colored frequency modulation (FM) noise and investigate their impact on bit error rate (BER) performance using simulations when the carrier phase recovery (CPR) function is present and absent. Without CPR, the tolerance to mismatch length deteriorates due to linewidth broadening induced by flicker FM noise. However, in the presence of CPR, the effect of colored FM noise is alleviated, especially in high baud rate systems.The experimental results confirm the correctness of the analysis, with phase noise measurements of distributed-feedback (DFB) and distributed Bragg-reflector (DBR) lasers.

引用

页码：6930 / 6938

页数：9

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