此软件运用先进的-有限差分光束传播法 (finite-difference beam propagation method) 的技术来模拟分析一般的光电组件，加上方便的使用者图形接口，能轻松地分析设计光电组件。
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Finite-difference beam-propagation method 有限差分光束传输法
Finite Difference Beam Propagation Method 用有限差分光束传播法 ; 有限差分光束传输法
finite-difference time-domain beam propagation method 时域有限差分束传播法
The three-dimensional finite-difference beam propagation method was used to compute the optical properties of fiber devices based on side-polished fiber.
本文还用三维有限差分光束传输法计算了侧边抛磨光纤波导的光学特性。
Calculating on practical problems shows that both the finite-difference beam propagation method and the gain character programs can give reasonable results.
实际计算表明，本文所编写的有限差分束传播法和掺铒波导增益特性计算程序，均能给出合理的计算结果。
So the main work in this dissertation is compiling and debugging the program for solving the field distribution in channel waveguides using three-dimensional finite-difference beam propagation method.
为此，本文重点完成了利用三维有限差分束传播法求解条形波导中场分布的计算程序的编写和调试。
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