title: High-transmission waveguide with a small radius of curvature at a bend fabricated by use of a circular photonic crystal.
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 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.
authors.affiliation: Photophysics Laboratory, Photodynamics Research Center, RIKEN, 519-1399, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan. horiuchi@postman.riken.jp
authors.forename: N
authors.initials: N
authors.lastname: Horiuchi
authors.forename: Y
authors.initials: Y
authors.lastname: Segawa
authors.forename: T
authors.initials: T
authors.lastname: Nozokido
authors.forename: K
authors.initials: K
authors.lastname: Mizuno
authors.forename: H
authors.initials: H
authors.lastname: Miyazaki