大芯径无源光纤的受激布里渊增益系数表征  

Characterization of Stimulated Brillouin Gain Coefficient of Large-Core Passive Optical Fiber

作　　者：何振兴 郭爱进 戎亮[1] 任军江[1] 顾劭忆[1] 张婕 文莉莉 HE Zhenxing;GUO Aijin;RONG Liang;REN Junjiang;GU Shaoyi;ZHANG Jie;WENG Lili(The 23rd Research Institute,CETC,Shanghai 201900,China)

机构地区：[1]中国电子科技集团公司第二十三研究所,上海201900

出　　处：《光纤与电缆及其应用技术》2024年第2期15-17,24,共4页Optical Fiber & Electric Cable and Their Applications

摘　　要：光纤非线性效应抑制了光纤在高功率激光中的应用,重点分析在窄线宽光纤激光器中的受激布里渊散射(SBS)。受激布里渊增益系数(SBGC)能够反映出光纤SBS性能。基于SBS产生机理,搭建了1064 nm波长下的大芯径无源光纤SBGC测试平台。经实际测试验证,该测试平台完成了对自行制备的芯径50μm的大芯径无源光纤SBGC和背向受激布里渊频移(BSBFS)测试,最低测得了1.9×10^(-12)m/W的光纤SBGC,较好地实现了对大芯径无源光纤SBGC测试表征。The nonlinear effect of optical fiber inhibits the use of optical fiber under high power conditions.Specially,the stimulated Brillouin scattering(SBS)in narrow-linewidth fiber lasers is emphasized for analysis.The stimulated Brillouin gain coefficient(SBGC)represents the SBS performance of optical fiber.Based on the mechanism of SBS generation,an SBGC test platform for large-core passive fiber is established at 1064 nm.After actual testing and verification,the test platform has completed the SBGC and backscattered stimulated Brillouin frequency shift(BSBFS)tests of the self prepared large-core passive fibers with 50μm core diameter.The test platform achieved a minimum measurement of 1.9×10^(-12)m/W fiber SBGC,which effectively achieved the characterization of SBGC of large-core passiveoptical fiber.

关 键 词：无源光纤 大芯径光纤 受激布里渊散射 受激布里渊增益系数 

分 类 号：TN818[电子电信—信息与通信工程]