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Analysis of GaN-based single-mode rib waveguide with large cross section

[+] Author Affiliations
Xiaobo Xing

Sun Yat-Sen University, Institute of Optoelectronic and Functional Composite Materials, State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou 510275 China

Xiaoqing Deng

Sun Yat-Sen University, Institute of Optoelectronic and Functional Composite Materials, State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou 510275 China

Baojun Li

Sun Yat-Sen University, Institute of Optoelectronic and Functional Composite Materials, State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou 510275 China

Bharat Chaudhari

International Institute of Information Technology, Pune 411057 India

J. Micro/Nanolith. MEMS MOEMS. 5(3), 033009 (October 06, 2006). doi:10.1117/1.2358091
History: Received November 04, 2005; Revised April 04, 2006; Accepted June 14, 2006; Published October 06, 2006
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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 GaNAlxGa1xN 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.

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© 2006 Society of Photo-Optical Instrumentation Engineers

Citation

Xiaobo Xing ; Xiaoqing Deng ; Baojun Li and Bharat Chaudhari
"Analysis of GaN-based single-mode rib waveguide with large cross section", J. Micro/Nanolith. MEMS MOEMS. 5(3), 033009 (October 06, 2006). ; http://dx.doi.org/10.1117/1.2358091


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