Scattering at visible frequencies from a two-dimensional silica/air photonic crystal material in the form of a fine fiber reveals the hexagonal crystal structure of the material. Oblique illumination allows the observation of first-order Bragg conditions even for a crystal structure with a pitch several times the wavelength of light. These scattering measurements demonstrate the feasibility of a low-loss waveguide based on photonic bandgap effects.
© 1998 Optical Society of America
Original Manuscript: March 24, 1997
Revised Manuscript: June 30, 1997
Published: January 20, 1998
Jonathan C. Knight, Tim A. Birks, Philip St. J. Russell, and John G. Rarity, "Bragg scattering from an obliquely illuminated photonic crystal fiber," Appl. Opt. 37, 449-452 (1998)