环形掺铒光纤放大器对ASE噪声抑制研究  

Research on ASE noise suppression using annular erbium-doped fiber amplifier

作　　者：罗代树 赵鸿 眭晓林 刘波 吴姿妍 张奕康 LUO Dai-shu;ZHAO Hong;SUI Xiao-ling;LIU Bo;WU Zi-yan;ZHANG Yi-kang(Key Laboratory of Solid State Laser Technology,Beijing 100015,China)

机构地区：[1]固体激光技术重点实验室,北京100015

出　　处：《激光与红外》2025年第3期331-335,共5页Laser & Infrared

基　　金：电科院士基金项目(No.201801030430)资助。

摘　　要：放大的自发辐射(ASE)是光纤激光器中不可避免的效应,它不仅降低1.5μm激光的泵浦转换效率,还限制1.5μm激光功率提升。为了降低输出信号中ASE噪声能量,本文提出了一种新型光纤激光放大系统结构,基于1×2AOM对信号光循环泵浦放大,利用OptiSystem软件进行了连续和脉冲信号的仿真。对比基于MOPA结构的脉冲光纤放大器,在信号光为连续信号,功率为-30 dBm,泵浦能量为350 mW时,噪声功率下降1.7 dB,而在信号光为脉冲信号,功率为-30 dBm,泵浦能量为600 mW时,噪声功率下降1.27 dB。Amplified spontaneous emission(ASE)is an unavoidable effect in fiber lasers,which not only reduces the pumping efficiency of 1.5μm laser,but also limits the power enhancement of 1.5μm laser.In order to reduce the ASE noise energy in the output signal,a new fiber laser amplification system structure is proposed,based on the 1×2 AOM for signal optical cycling pumping amplification,and the simulation of continuous and pulsed signals is carried out using OptiSystem software.Compared with the pulsed fiber amplifier based on MOPA structure,the noise power decreases by 1.7 dB when the signal light is a continuous signal with a power of-30 dBm,and a pump energy of 350 mW,while the noise power decreases by 1.27 dB when the signal light is a pulse signal with a power of-30 dBm,and a pumping energy of 600 mW.

关 键 词：放大自发辐射 掺铒光纤 噪声抑制 OPTISYSTEM 

分 类 号：TN248[电子电信—物理电子学] TN929.1