PLC型多模光功率分配器的设计与制作--《浙江大学》2008年硕士论文 。综合比较可得:1×4扰模区应该采用矩形结构;1×8扰模区既可以采用矩形结构,又可以采用锥形结构。 采用光束传输法(Beam Propagation Method,BPM),使用BeamPROP对分光区建模。对于直波导分光区,波导与中轴线的夹角θ应该不超过25°;对于S形
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在光束传输法中只分析前向亥姆霍兹方程，而后向分量近似为零。
Only positive Helmholtz equation is considered in beam propagation method, while the negative component is approximately zero.
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。
The three-dimensional finite-difference beam propagation method was used to compute the optical properties of fiber devices based on side-polished fiber.
采用矢量光束传输法对空气孔包层呈正六边形分布的微结构光纤的色散和非线性特性进行了数值模拟。
The dispersive and nonlinear properties of the microstructure fiber with hexagonally distributed air-holes in the cladding are numerically simulated by using the vectorial beam propagation method.
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