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PIERS Online
Vol. 5
No. 2
2009
pp: 109-112Tunable Y-shaped Waveguides in Two-dimensional Photonic CrystalsChung-Jen Hsu and Chin-Ping Yu doi:10.2529/PIERS081006193050 Downloads: 392 Abstract:We utilize the mode-gap effect to design a tunable Y-shaped waveguide in the two-dimensional photonic crystal consisted of air holes infiltrated with polyaniline type electrorheological fluids in triangular lattices. By applying the electric field in the specific region, the refractive index of the fluids can be alternated to induce the mode-gap effect and the propagation of light in each arm of the Y-shaped waveguide is demonstrated to be controllable.References:1. Yablonovitch, E., "Inhibited spontaneous emission in solid-state physics and electronics," Phys. Rev. Lett., Vol. 58, 59-2062, 1987. 2. Joannopoulos, J. D., S. G. Johnson, R. D. Meade, and J. N. Winn, Photonic Crystals: Molding the Flow of Light, Second Edition, Princeton Univ. Press, 2008. 3. Song, B. S., T. Asano, Y. Akahane, Y. Tanaka, and S. Noda, "Transmission and reflection characteristics of in-plane hetero-photonic crystals," App. Phys. Lett., Vol. 85, 4591-4593, 2004. 4. Song, B. S., S. Noda, T. Asano, and Y. Akahane, "Ultra-high-Q photonic double-heterostructure nanocavity," Nature Mater., Vol. 4, 207-210, 2005. 5. Tomljenovic-Hanic, S., C. Martijn de Sterke, M. J. Stell, and D. J. Moss, "High-Q cavities in photosensitive photonic crystals," Opt. Lett., Vol. 32, 542-544, 2007. 6. Takano, H., B. S. Song, T. Asano, and S. Noda, "Highly efficient multi-channel drop filter in a two-dimensional hetero photonic crystal," Opt. Express, Vol. 14, 3491-3496, 2006. 7. Takeda, H. and K. Yoshino, "Tunable light propagation in Y-shaped waveguides in two-dimensional photonic crystals utilizing liquid crystals as linear defects," Phys. Rev. B, Vol. 67, 073106-1-073106-4, 2003. 8. Takeda, H. and K. Yoshino, "Tunable light propagation in Y-shaped waveguides in two-dimensional photonic crystals composed of semiconductors depending on temperature," Opt. Comm., Vol. 219, 177-182, 2003. 9. Li, J., "Terahertz modulator using photonic crystals," Opt. Comm., Vol. 269, 98-101, 2007. |
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