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Optics Letters

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  • Vol. 25, Iss. 24 — Dec. 15, 2000
  • pp: 1771–1773

Semivectorial H-field analysis of rib waveguides by a modified beam-propagation method based on the generalized Douglas scheme

Junji Yamauchi, Toshiyuki Murata, and Hisamatsu Nakano  »View Author Affiliations


Optics Letters, Vol. 25, Issue 24, pp. 1771-1773 (2000)
http://dx.doi.org/10.1364/OL.25.001771


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Abstract

A low-truncation-error scheme for a step-index profile is applied to analysis of a three-dimensional waveguide with the aid of the alternating-direction implicit method. The propagation constants of a single and a coupled rib waveguide are analyzed by use of the imaginary distance procedure. A fast convergence rate, which is not obtainable with the conventional second-order schemes, is realized, leading to highly accurate evaluation of the coupling length. A reduction in discretization error is also demonstrated in the beam-propagation analysis of a tilted rib-waveguide coupler.

© 2000 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(230.7370) Optical devices : Waveguides

Citation
Junji Yamauchi, Toshiyuki Murata, and Hisamatsu Nakano, "Semivectorial H-field analysis of rib waveguides by a modified beam-propagation method based on the generalized Douglas scheme," Opt. Lett. 25, 1771-1773 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-24-1771


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