激光技术2026，Vol.50Issue(1)：31-36,6.DOI:10.7510/jgjs.issn.1001-3806.2026.01.004
基于增益动态噪声演变的掺铒光纤放大器的参数优化
Parameter optimization of erbium-doped fiber amplifiers based on gain-dynamics-dependent noise evolution
摘要
Abstract
To suppress optical noise of signals in master-oscillator power amplifier(MOPA)systems,an experimental study was conducted on the effects of input signal power and pump power on the transfer characteristics of optical noise of input signals in a 1550 nm single-frequency erbium-doped fiber amplifier,based on gain dynamics theory.Furthermore,the relative intensity noise(RIN)characteristics of the fiber amplifier were analyzed and verified using gain dynamics.The results demonstrated that under the conditions of low residual pump power and minimal amplified spontaneous emission intensity,the suppression ratio of input signal intensity noise transfer was proportional to the amplification gain.This indicated that the transfer of input signal intensity noise could be significantly suppressed while increasing the output power.By optimizing the powers of the input signal and pump,the RIN of the output laser below 10 kHz was suppressed.Specifically,a 6.0 dB suppression was achieved in the range of 1 Hz to 200 Hz by optimizing the input signal power,and a 10.5 dB suppression was attained in the range of 1 Hz to 250 Hz by optimizing the pump power.This study provides references for parameter optimization and noise suppression in fiber MOPA systems.关键词
光纤放大器/强度噪声/增益动力学/主振荡功率放大/掺铒光纤Key words
fiber amplifier/intensity noise/gain dynamic/master-oscillator power amplifier/erbium-doped fiber分类
信息技术与安全科学引用本文复制引用
刘思吟,段良友,何幸锴,沈琪皓,刘贞,蒋哲,周鼎富..基于增益动态噪声演变的掺铒光纤放大器的参数优化[J].激光技术,2026,50(1):31-36,6.基金项目
西南技术物理研究所稳定支持项目资助 （）
