Anomalous refraction in disordered one-dimensional photonic lattices

作者：Xu Lei; Yin Yi; Bo Fang; Xu Jingjun; Zhang Guoquan^*

来源：Journal of the Optical Society of America B-Optical Physics, 2014, 31(1): 105-109.

DOI：10.1364/JOSAB.31.000105

We study the light refraction behavior at the entrance surface of the width-disordered one-dimensional waveguide array. As compared to the case in a uniform periodic waveguide array, anomalous refraction behavior is observed for the eigenmodes in the first band of the disordered waveguide array. The transverse propagation velocities of the eigenmodes in the first band are dramatically suppressed and the light is tightly confined around and propagates along the initially exciting waveguides. This may provide an effective method for beam coupling and collimation in the disordered photonic lattices.

• 出版日期2014-1
• 单位南开大学