Abstract

A bent photonic crystal waveguide was fabricated by use of a lattice pattern of a circular photonic crystal that allowed high transmission for a broad band of wavelengths with a small radius of curvature at a bend. The waveguide was fabricated by use of alumina rods with a diameter of $3\mathrm{mm}$. Windows of high transmission as a result of waveguiding were observed near 9 and $15\mathrm{GHz}$. By measurement of the relative wave intensity ${\mid E\mid }^2$ along the line defects, the propagation losses in the straight and the bent sections were estimated at $9.3\mathrm{GHz}$ to be 0.04 and $0.03\mathrm{dB}∕\mathrm{mm}$, respectively.

© 2005 Optical Society of America

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