掺Yb^(3+)光纤放大器的自发辐射噪声分析  

Comprehensive analysis of amplified spontaneous emission noise of Yb^(3+)-doped fiber amplifier

作　　者：赵振宇[1,2] 段开椋[1] 王建明[1,2] 赵卫[1] 王屹山[1] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室,西安710119 [2]中国科学院研究生院,北京100049

出　　处：《激光技术》2009年第6期611-614,618,共5页Laser Technology

基　　金：中国科学院"西部之光"人材培养计划资助项目(0729591213)

摘　　要：为了研究掺 Yb^(3+)光纤放大器中自发辐射噪声分布情况,利用离散化的方法求解掺 Yb^(3+)光纤放大器的速率方程,理论研究了不同的抽运方式、端面反射率、抽运功率以及有无滤波等条件下,端面抽运掺 Yb^(3+)光纤放大器中自发辐射的功率放大特性。结果表明,不同边界条件下的自发辐射功率差异较大;通过减少光纤端面的菲涅耳反射和利用滤波技术等方法,可有效抑制光纤激光放大器中自发辐射噪声的功率放大。In order to study the distribution of spontaneous noise in a Yb^3＋ -doped fiber amplifier （YDFA） ,the power gain characteristics of amplified spontaneous emission under conditions of different pump schemes and power,end surface reflectivity and spectral filter were studied by solving the discrete rate equation. The results show that the power of amplified spontaneous emission is different under different boundary conditions, and that the power amplification of the amplified spontaneous emission can be suppressed effectively by reducing the fiber surface reflectivity and using a properly selected spectral filter.

关 键 词：光纤放大器 自发辐射 噪声 掺Yb^3+光纤放大器 高功率 

分 类 号：O432.12[机械工程—光学工程] TN253[理学—光学]