We propose a method to bend a self-collimated beam propagating in a photonic crystal (PhC). The PhC is made of elliptically dielectric rods. We investigate the effect of orientation angle of elliptical rods on the light propagation. The propagation of light is analyzed by the use of finite-difference time-domain technique. A modulated PhC is then designed by gradually varying the orientation of ellipse. We demonstrate that the gradually variation of orientation angle results in smooth change in the propagation direction. The capability of bending light by gradually modulated PhC structure suggests a new direction for the realization of PhC light circuits.

Date Published: 20 November 2012
PDF: 5 pages
Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 85641M (20 November 2012); doi: 10.1117/12.999622

Published in SPIE Proceedings Vol. 8564:
Nanophotonics and Micro/Nano Optics
Zhiping Zhou; Kazumi Wada, Editor(s)