Abstract
We study the transmission properties of a one-dimensional array with intersite side-coupled defect and demonstrate that, as the system undergoes sharp Fano resonance, it exhibits geometry-induced vorticity of the energy flux. The optical vortex inverts its handedness at the Fano resonance, revealing a strong link between two phenomena, both being of interference origin. Our approach is quite general and can be applied to a variety of systems; as an example we demonstrate a similar effect in photonic crystal structure.
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Hua Lu, Xueming Liu, Dong Mao, and Guoxi Wang
Opt. Lett. 37(18) 3780-3782 (2012)
Yiqi Zhang, Zhenkun Wu, Chenzhi Yuan, Xin Yao, Keqing Lu, Milivoj Belić, and Yanpeng Zhang
Opt. Lett. 37(21) 4507-4509 (2012)
Guang-Yin Chen and Yueh-Nan Chen
Opt. Lett. 37(19) 4023-4025 (2012)