光学学报, 2011, 31 (s1): s100207, 网络出版: 2011-06-23  

应力分布对单频光纤拉曼放大器中受激布里渊散射的影响

Influence of Strain Distribution on Stimulated Brillouin Scattering in Single-Frequency Fiber Raman Amplifiers
作者单位
国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
摘要
高功率单频光纤拉曼放大器(SF-FRA)的输出功率往往会由于受激布里渊散射(SBS)的出现而受到限制。从SF-FRA中SBS因素限制下的强度耦合方程组出发,讨论了SBS因素对不同拉曼增益光纤长度的SF-FRA输出功率的限制作用,比较了不同的应力场施加方案对SBS抑制效果的影响,提出了优化后的应力分布施加方案。数值模拟结果表明,在拉曼增益光纤中引入应力梯度分布,可使得SBS的增益谱变宽,增益系数降低,进而实现对SBS的抑制;在光纤对应力的承受范围内,所施加的应力的位置、份数、每段光纤上的应力大小、应力施加均匀性等对放大器性能都有较大影响;采取优化后的应力施加方案,可将SF-FRA的输出功率提高近一倍。数值模拟结果为实验研究高功率SF-FRA中SBS的抑制提供了理论指导。
Abstract
High power operation of single-frequency Raman fiber amplifier (SF-FRA) is usually limited by the generating of stimulated Brillouin scattering (SBS). Based on the intensity equations combining SBS and stimulated Raman scattering (SRS), the limitation action to the output power of SF-FRAs for SBS is studied, the influence of different strain distributions to SBS inhibition is compared and an optimal solution of strain distribution is proposed. The simulation results indicate that strain gradients along Raman gain fibers can broaden the SBS gain profile and thereby suppress SBS. The location, stage number, value and length have the optima in the fibers′ receivable range of strain. The threshold of output power of SF-FRA can be increased about 100% under the optimum condition.

许将明, 冷进勇, 吴武明, 周朴, 侯静. 应力分布对单频光纤拉曼放大器中受激布里渊散射的影响[J]. 光学学报, 2011, 31(s1): s100207. Xu Jiangming, Leng Jinyong, Wu Wuming, Zhou Pu, Hou Jing. Influence of Strain Distribution on Stimulated Brillouin Scattering in Single-Frequency Fiber Raman Amplifiers[J]. Acta Optica Sinica, 2011, 31(s1): s100207.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!