中文

Journal of Applied Sciences ›› 2003, Vol. 21 ›› Issue (1): 5-8.

• Articles • Previous Articles     Next Articles

An Investigation of the Modeling for a Parallel Directional Coupler Based on the 3D-GM-BPM

XIAO Jin-biao, SUN Xiao-han, CAI Chun, ZHANG Xi-fei, ZHUJian-bin, ZHANG Ming-de, DING Dong   

  1. Department of Electronic Engineering, Southeast University, Nanjing 210096, China
  • Received:2001-12-14 Revised:2002-03-05 Online:2003-03-10 Published:2003-03-10

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Abstract: A three-dimensional beam propagation method based on the Galerkin method (3D-GM-BPM) is proposed for directly modeling a parallel directional coupler based on optical rib waveguides. The computational efficiency is raised due to the small matrix derived from this method, which is reduced to solver a first-order normal differential equation system. A tangent-type function is applied to map the infinite region into closed region. As a result, the artificial boundary condition is eliminated.

Key words: three-dimensional beam propagation method (3D-BPM), parallel directional couplers, Galerkin method (GM), optical rib waveguides

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