CAJ | 학술논문

相移光栅作为窄带宽透射型滤波器件在光纤激光器设计中有很高的应用价值。研究了基于啁啾相移光栅的环形腔掺铒光纤激光器的仿真模型。利用传输矩阵法仿真了啁啾相移光栅的传输谱，并对行波速率方程进行数值化模拟，得到了激光器工作时，掺铒光纤上能级粒子数、输出激光功率时域变化以及输出激光频谱。仿真采用功率为0.3 W的980 nm泵浦源得到了输出约为0.078 W,带宽为0.02 nm的连续光输出。同时，详细分析了输出激光功率随泵浦功率和输出耦合比值的变化情况。仿真结果表明，输出激光功率随泵浦光功率呈线性变化，存在一个最优的输出耦合比值使输出光功率值最大。
상이광책작위착대관투사형려파기건재광섬격광기설계중유흔고적응용개치。연구료기우조추상이광책적배형강참이광섬격광기적방진모형。이용전수구진법방진료조추상이광책적전수보，병대행파속솔방정진행수치화모의，득도료격광기공작시，참이광섬상능급입자수、수출격광공솔시역변화이급수출격광빈보。방진채용공솔위0.3 W적980 nm빙포원득도료수출약위0.078 W,대관위0.02 nm적련속광수출。동시，상세분석료수출격광공솔수빙포공솔화수출우합비치적변화정황。방진결과표명，수출격광공솔수빙포광공솔정선성변화，존재일개최우적수출우합비치사수출광공솔치최대。
The simulation model of a ring Er-doped fiber laser based on chirped phase shifted fiber Bragg grat?ing (CPSFBG) is researched. The transmission spectrum of CPSFBG is obtained through transmission matrix method and traveling wave rate equation is performed numerically to obtain Er-doped fiber up-level particle number, output laser power time domain variation and output laser spectrum during laser operation. The pumping source with 0.3 W power and 980 nm is used to obtain the continuous laser output with 0.078 W output and 0.02 nm bandwidth. The output laser power linearly changing with the ratio of pumping power and output coupling is analyzed in detail. Sim?ulation results show that output laser power changes linearly with pumping laser power and there is an optimal out?put coupling ratio to realize the maximum laser power.