增益导引折射率反导引光纤激光特性的研究  

Research on laser characteristics of gain-guided and index-antiguided fibers

作　　者：王伟能[1] 谭晓玲[1] 田振[1] 耿优福[1] 王鹏[1] 姚建铨[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院激光与光电子研究所光电信息科学技术教育部重点实验室,天津300072

出　　处：《激光技术》2009年第5期503-505,共3页Laser Technology

基　　金：国家自然科学基金资助项目(60637010);国家九七三重点基础研究发展计划资助项目(2007CB310403)

摘　　要：为了实现大模场单模光纤,采用增益导引和折射率反导引相结合的新方法,进行了腔镜反射率对增益导引折射率反导引光纤激光器影响的理论研究,数值模拟了不同增益系数和负折射率差值情况下的模场分布及对模场的影响,得出了单模运转条件。结果表明,增益导引和折射率反导引光纤可以实现大模场面积,这为设计大模场光纤提供了理论依据,具有重要的指导意义。In order to realize large mode area and single-mode fibers, a combining method of gain-guiding and indexantiguiding technique was adopted. Based on this method, the effect of the reflectivity of the resonator mirror on gain-guided and index-antiguided fiber lasers was analyzed in detail. Numerical simulation results show that the mode field distribution is varied with gain coefficient and negative index step, so the large mode area fiber with single mode operation can be realized by choosing optimal parameters ,which is highly instructive for the design of large mode area fibers.

关 键 词：光纤光学 光纤激光器 大模场光纤 增益导引 折射率反导引 增益阈值 

分 类 号：TN248.1[电子电信—物理电子学]