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Proceedings Paper

A modified full-vectorial finite-difference beam propagation method based on H-fields for optical waveguides with step-index profiles
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Paper Abstract

A modified full-vectorial finite-difference beam propagation method based on H-fields in solving the guided-modes for optical waveguides with step-index profiles is described. The propagation is split into two substeps. In the first substep, the field propagates in the absence of the cross-coupling terms, and then they are evaluated and double used in the second substep. An improved six-point finite-difference scheme is constructed to approximate the cross-coupling terms along the transverse directions. By using the imaginary-distance procedure, the field patterns and the normalized propagation constants of the fundamental modes for a typical rib waveguide are presented, and the hybrid nature of the full-vectorial guided-modes is demonstrated. Solutions are in good agreement with the benchmark results from film mode matching method, which tests the validity and utility of the present method.

Paper Details

Date Published: 13 October 2006
PDF: 10 pages
Proc. SPIE 6368, Optoelectronic Devices: Physics, Fabrication, and Application III, 63680W (13 October 2006); doi: 10.1117/12.682827
Show Author Affiliations
Jinbiao Xiao, Southeast Univ. (China)
Xiaohan Sun, Southeast Univ. (China)


Published in SPIE Proceedings Vol. 6368:
Optoelectronic Devices: Physics, Fabrication, and Application III
Joachim Piprek; Jian Jim Wang, Editor(s)

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