Numerical Analysis of a Symmetric Nonlinear Directional Coupler

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概要

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• The power transfer characteristics of a symmetric nonlinear directional coupler (NLDC) are analyzed rigorously using the beam propagation method based on the finite difference scheme. The NLDC consists of two linear waveguides separated by a Kerr-like nonlinear gap layer. The change of nonlinear refractive index along the coupler is precisely evaluated by making use of the second-order iteration procedure with respect to a small propagation length. For the incidence of TE_0 mode of the isolated linear waveguide, the highly accurate numerical results are obtained for the behavior of power transfer, and the coupling length and critical power for optical switching. The dependencies of the coupling length and critical power on the width of the gap layer and the input power levels are discussed, compared with those predicted by the coupled-mode approximations.

• 社団法人電子情報通信学会の論文
• 1994-02-25

著者

• MAEDA Hiroshi

  The Faculty of Information Engineering at Fukuoka Institute of Technology

• Yasumoto Kiyotoshi

  The Faculty Of Engineering Kyushu University

関連論文

• Analysis of Electromagnetic Wave Scattering by a Conducting Thin Plate and Image Coefficient for Ray Tracing Method
• Coupled-Mode Analysis of a Symmetric Nonlinear Directional Coupler Using a Singular Perturbation Scheme (Special Issue on Electromagnetic Theory)
• Numerical Analysis of a Symmetric Nonlinear Directional Coupler

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