We study controllable self-shifting Bloch modes in anisotropic hexagonal photonic lattices. The shifting results from a deformed band structure due to deformation of the index distribution in each unit cell. By reconfiguration of the index profile of the unit cell, the direction in which the Bloch modes move can be controlled. Our theoretical predictions are experimentally demonstrated in hexagonal lattices optically induced in an anisotropic nonlinear crystal.
© 2012 Optical Society of America
Diffraction and Gratings
Original Manuscript: January 23, 2012
Revised Manuscript: March 1, 2012
Manuscript Accepted: March 20, 2012
Published: June 4, 2012
Sheng Liu, Yi Hu, Peng Zhang, Xuetao Gan, Cibo Lou, Daohong Song, Jianlin Zhao, Jingjun Xu, and Zhigang Chen, "Tunable self-shifting Bloch modes in anisotropic hexagonal photonic lattices," Opt. Lett. 37, 2184-2186 (2012)