A new BPM algorithm based on the series expansion method

Qin, Weiping; Fang, Da‐Gang; Huang, Weiping

doi:10.1002/(sici)1098-2760(20000120)24:2<125::aid-mop13>3.0.co;2-3

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“…In addition, the present method can be directly applied to simulate this coupler without using effective index method [5]. In dealing with the boundary conditions, a tangent-type function [6], [7] is applied to map the infinite plane into a unit square. As a result, the artificial boundary conditions [8], [9] are eliminated.…”

Section: Introductionmentioning

confidence: 99%

Simulation of symmetric directional coupler with optical rib waveguide using 3D-BPM based on the Galerkin method

Xiao

Sun

Zhang

2001

Fiber Optics and Optoelectronics for Network Applications

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The symmetric directional coupler with optical rib waveguide is simulated using a novel three-dimensional beam propagation method (3D-BPM) based on the Galerkin method. The coupling ratio is as high as 99.4%. The matrix derived from the present method is small. Consequently, the calculation is efficient. A tangent-type function is applied to map the infinite region into a closed region. As a result, the artificial boundary conditions are eliminated.

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