利用打靶法模拟稳态受激布里渊散射  

The numerical simulation of steady-state SBS by shooting method

作　　者：杨效[1] 龚华平[1] 胡明磊[1] 宋海峰[1] 董新永[1] 

机构地区：[1]中国计量学院光学与电子科技学院,浙江杭州310018

出　　处：《中国计量学院学报》2013年第3期323-326,共4页Journal of China Jiliang University

基　　金：浙江省自然科学基金资助项目(No.Y1110687;No.Y1110700)

摘　　要：提出了用打靶法结合有限差分法求解稳态受激布里渊散射(SBS)耦合方程的算法.利用了先猜测,再修正的逐渐逼近的方法将边值问题转化为初值问题,从而解决了如何确定边界上的泵浦光和Stokes光的初始值的问题.在计算过程中,不仅考虑了光的损耗,而且简化了龙格库塔积分法的繁琐程序,使得计算程序简练快速,结果准确.利用该算法,模拟了不同入射泵浦功率和不同光纤长度时,泵浦光和Stokes光沿光纤的功率分布.An algorithm to solve the coupling equations of steady-state stimulated Brillouin scattering(SBS) with shooting method combined with the finite difference method was proposed.In this algorithm,the coupling equations were solved by means of gradual approximation,guessing at first and then correcting,so that the boundary-value problem was transformed into the initial-value problem.And then the problem of determining the initial value of the pump and Stokes light was settled.In the calculation,not only the fiber loss was considered,but also the complexity of Runge-Kutta integration method was simplified.And it made the procedure concise and correct.Using the proposed algorithm,the power distribution of the pump and Stokes light along the fiber with different fiber lengths and incident pump powers is obtained.

关 键 词：打靶法 受激布里渊散射 耦合方程 

分 类 号：O437.2[机械工程—光学工程]