High-transmission waveguide with a small radius of curvature at a bend fabricated by use of a circular photonic crystal.
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 mm. Windows of high transmission as a result of waveguiding were observed near 9 and 15 GHz. By measurement of the relative wave intensity [E]2 along the line defects, the propagation losses in the straight and the bent sections were estimated at 9.3 GHz to be 0.04 and 0.03 dB/mm, respectively.
Horiuchi
N
N
Photophysics Laboratory, Photodynamics Research Center, RIKEN, 519-1399, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan. horiuchi@postman.riken.jp
Segawa
Y
Y
Nozokido
T
T
Mizuno
K
K
Miyazaki
H
H