改进的有限差分柱传播方法  

Modified Finite-difference-beam Propagation Method

作　　者：沈壁川[1] 王伟[1] 简水生[1] 

机构地区：[1]北方交通大学光波技术研究所

出　　处：《光通信研究》1996年第1期44-47,共4页Study on Optical Communications

摘　　要：提出采用吸收边界条件的改进的有限差分柱传播方法,计算沿着传输方向具有较大折射率突变而引起的反射的光波导。通过考察一个方向耦合器,核对了该方法的精确性。耦合长度和模场分布与文献[4]中两给出的结果相符合。The modified finite-difference beam propagation method employing ab- sorbing condition is developed to calculate the optical waveguides with large discon- tinuities along the direction of the propagation.The accuracy of this method is in- vestigated through a study of a directional coupler.Both the coupling length and the field distribution are in good agreement with the results in the literatures.

关 键 词：有限差分柱 传播方法 耦合长度 模场分布 光波导 

分 类 号：TN252.06[电子电信—物理电子学]