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Journal of Micro/Nanolithography, MEMS, and MOEMS

Analysis of GaN-based single-mode rib waveguide with large cross section
Author(s): Xiaobo Xing; Xiaoqing Deng; Baojun Li; Bharat S. Chaudhari
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Paper Abstract

A GaN-based optical single-mode rib waveguide with a large cross section is systematically designed and analyzed using the finite-difference vector beam propagation method (FD-VBPM). The method is a combination of numerical aperture and FD-VBPM, which is used to determine the single-mode conditions for a GaN/AlxGa1–xN optical rib waveguide. We analyze the optical propagation properties and loss characteristics of the designed waveguides. The analysis illustrates that optical power increases with an increase of the rib width or a decrease of the slab height. Therefore, our analysis results can be helpful in the process of designing a GaN-based rib waveguide for optical communications.

Paper Details

Date Published: 1 July 2006
PDF: 5 pages
J. Micro/Nanolith. MEMS MOEMS 5(3) 033009 doi: 10.1117/1.2358091
Published in: Journal of Micro/Nanolithography, MEMS, and MOEMS Volume 5, Issue 3
Show Author Affiliations
Xiaobo Xing, Sun Yat-Sen Univ. (China)
Xiaoqing Deng, Institute of Semiconductors (China)
Baojun Li, Sun Yat-Sen Univ. (China)
Bharat S. Chaudhari, International Institute of Information Technology (India)

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