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Proceedings Paper

Independent control of upper and lower cutoff frequencies in two-dimensional photonic crystal waveguides
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Paper Abstract

The independent control of the upper and lower cutoff frequencies of the guided modes in coupled-cavity wavguides (CCWs) is investigated numerically. The CCWs are formed in a two-dimensional photonic crystal (2D PhC) consisting of a square array of dielectric rods in the air. The dielectric constant and radius of the rods in the perfect PhC is 11.56 and 0.18α, respectively, in which α is lattice constant. By using the plane wave expansion method (PWEM), the impact of two influencing factors on cutoff frequencies in CCWs is calculated systematically. Efficient methods have been demonstrated for tuning one cutoff frequency while keeping the other unchanged. The indepent control ranges of the upper and lower cutoff can be up to 67.85% and 68.57% of photonic band gap (PBG), respectively. The results can be applied to the design of PhC-based optical devices such as band filters and optical switches.

Paper Details

Date Published: 31 January 2005
PDF: 7 pages
Proc. SPIE 5624, Semiconductor and Organic Optoelectronic Materials and Devices, (31 January 2005); doi: 10.1117/12.573298
Show Author Affiliations
Xiyao Chen, Univ. of Science and Technology of China (China)
Minjiang Univ. (China)
Peijun Yao, Univ. of Science and Technology of China (China)
Bo Chen, Univ. of Science and Technology of China (China)
Feng Li, Univ. of Science and Technology of China (China)
Anting Wang, Univ. of Science and Technology of China (China)
Liang Lv, Univ. of Science and Technology of China (China)
Jiangying Zhang, Univ. of Science and Technology of China (China)
Hai Ming, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 5624:
Semiconductor and Organic Optoelectronic Materials and Devices
Chung-En Zah; Yi Luo; Shinji Tsuji, Editor(s)

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