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Structure Dependence of Mode Edges in Photonic Crystal Waveguide with Silicon on Insulator |
| TANG Hai-Xia;ZUO Yu-Hua;YU Jin-Zhong;WANG Qi-Ming |
| State Key Joint Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 |
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| Cite this article: |
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TANG Hai-Xia, ZUO Yu-Hua, YU Jin-Zhong et al 2006 Chin. Phys. Lett. 23 2999-3002 |
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Abstract The mode edges of photonic crystal waveguide with triangular lattice based on a silicon-on-insulator slab are investigated by combination of the effective index method and the two-dimensional plane wave expansion method. The variations of waveguide-mode edges with the structure parameters of photonic crystal are deduced. When the ratio of the radius of air holes to the lattice constant, r/Λ, is fixed and the lattice constant of photonic crystal, Λ, increases, the waveguide-mode edges shift to longer wavelengths. When Λ is fixed and r/Λ increases, the waveguide-mode edges shift to shorter wavelengths. Additionally, when r/Λ and Λ are both fixed, the radius of the two-row air holes adjacent to the waveguide increases, the waveguide-mode edges shift to shorter wavelengths.
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| Keywords:
42.70.Qs
42.82.Et
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Published: 01 November 2006
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| PACS: |
42.70.Qs
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(Photonic bandgap materials)
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42.82.Et
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(Waveguides, couplers, and arrays)
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