Isotropic photonic gaps in a circular photonic crystal |
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| Authors: | Horiuchi N Segawa Y Nozokido T Mizuno K Miyazaki H |
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| Institution: | Photophysics Laboratory, Photodynamics Research Center, RIKEN, 519-1399, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan. horiuchi@postman.riken.jp |
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| Abstract: | We investigated the optical properties of a circular photonic crystal (CPC) for which the distance between lattices was systematically distributed. The transmission spectra of CPC composed of alumina cylinders were examined in the frequency region from 0 to 20 GHz. We show that photonic gaps are obtained not only in CPCs but also in phase-shifted CPCs. The isotropic photonic gaps are evidenced by changes in the incident angle of a millimeter wave. |
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