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.

© 2004 Optical Society of America

Wide angularly isotropic photonic bandgaps obtained from two-dimensional photonic crystals with Archimedean-like tilings

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Optical parametric oscillations in isotropic photonic crystals

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Photonic band gap in isotropic hyperuniform disordered solids with low dielectric contrast

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Finite element method analysis of band gap and transmission of two-dimensional metallic photonic crystals at terahertz frequencies

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