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13 October 2006 A modified full-vectorial finite-difference beam propagation method based on H-fields for optical waveguides with step-index profiles
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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.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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