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

Jinbiao Xiao; Xiaohan Sun

doi:10.1117/12.682827

13 October 2006 A modified full-vectorial finite-difference beam propagation method based on H-fields for optical waveguides with step-index profiles

Jinbiao Xiao, Xiaohan Sun

Author Affiliations +

Proceedings Volume 6368, Optoelectronic Devices: Physics, Fabrication, and Application III; 63680W (2006) https://doi.org/10.1117/12.682827
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

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.

Citation Download Citation

Jinbiao Xiao and Xiaohan Sun "A modified full-vectorial finite-difference beam propagation method based on H-fields for optical waveguides with step-index profiles", Proc. SPIE 6368, Optoelectronic Devices: Physics, Fabrication, and Application III, 63680W (13 October 2006); https://doi.org/10.1117/12.682827

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