New computational treatment of optical wave propagation in lossywaveguides

2015, Volume 16, Issue 8

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Frontiers of Information Technology & Electronic Engineering >> 2015, Volume 16, Issue 8 doi: 10.1631/FITEE.1400406

New computational treatment of optical wave propagation in lossywaveguides

Department of Mathematics, Zhejiang University, Hangzhou 310027, China

Available online: 2015-09-08

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Abstract

In this paper, the optical wave propagation in lossy waveguides is described by the Helmholtz equation with the complex refractive-index, and the Chebyshev pseudospectral method is used to discretize the transverse operator of the equation. Meanwhile, an operator marching method, a one-way re-formulation based on the Dirichletto-Neumann (DtN) map, is improved to solve the equation. Numerical examples show that our treatment is more efficient.

Keywords

Adjoint operator ; Orthogonal ; Chebyshev ; Pseudospectral method ; Dirichlet-to-Neumann map

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