| 相位调制法抑制高功率窄线宽光纤放大器中的受激布里渊散射 |
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| 引用本文： | 杜文博,王小林,韩凯,周朴,许晓军,舒柏宏. 相位调制法抑制高功率窄线宽光纤放大器中的受激布里渊散射[J]. 中国激光, 2011, 0(11) |
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| 作者姓名： | 杜文博 王小林 韩凯 周朴 许晓军 舒柏宏 |
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| 作者单位： | 国防科学技术大学光电科学与工程学院; |
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| 摘 要： | 相位调制单频激光产生多波长激光具有操作简单、成本低的特点,可有效抑制窄线宽光纤放大器中的受激布里渊散射(SBS)效应。理论研究了波长数目、波长成分相对强度与调制信号之间的关系,当调制频率较小时(如约100MHz),调制产生的多频激光可以有效提高SBS阈值。实验研究了调制频率为100MHz的相位调制对高功率窄线宽光纤放大器中SBS的抑制效果。在放大器末端熔接16m和26.5m传能光纤的情况下,SBS阈值输出功率分别为相应的未调制时的2.5倍和3.7倍。实验结果表明,利用相位调制可以有效抑制窄线宽光纤放大器中的SBS效应,且抑制效果与系统参数有关,未调制时的SBS阈值越低,效果越好。
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| 关 键 词： | 光纤光学 受激布里渊散射抑制 相位调制 窄线宽 光纤放大器 |
Suppression of Stimulated Brillouin Scattering in High Power Narrow-Linewidth Fiber Amplifier with Phase-Modulation |
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| Du Wenbo Wang Xiaolin Han Kai Zhou Pu Xu Xiaojun Shu Bohong. Suppression of Stimulated Brillouin Scattering in High Power Narrow-Linewidth Fiber Amplifier with Phase-Modulation[J]. Chinese Journal of Lasers, 2011, 0(11) |
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| Authors: | Du Wenbo Wang Xiaolin Han Kai Zhou Pu Xu Xiaojun Shu Bohong |
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| Affiliation: | Du Wenbo Wang Xiaolin Han Kai Zhou Pu Xu Xiaojun Shu Bohong (College of Optoelectric Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China) |
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| Abstract: | Phase modulation of the single frequency laser to attain the multi-tone laser costs less and is easy to carry out.It has been proved to be an effective way to suppress stimulated Brillouin scattering(SBS) in narrow-linewidth fiber amplifiers.Relationships between modulation signals and constitutions of the modulated laser are studied theoretically.When the modulation frequency is small,for example 100 MHz,the multi-frequency laser can be attained and SBS threshold is effectively enhanced.Experimental resear... |
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| Keywords: | fiber optics stimulated Brillouin scattering suppression phase modulation narrow-linewidth fiber amplifier |
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