Mode propagation in a PT-symmetric gain-metal-loss plasmonic system

作者:Han, Jin*; Fan, Yuancheng; Jin, Liang; Zhang, Zhengren; Wei, Zeyong; Wu, Chao; Qiu, Jianbei; Chen, Hong; Wang, Zhanshan; Li, Hongqiang
来源:Journal of Optics, 2014, 16(4): 045002.
DOI:10.1088/2040-8978/16/4/045002

摘要

A novel gain-metal-loss plasmonic system with PT-symmetry is proposed and provides a new way of optical operation. Mode propagation is demonstrated by theoretical investigation of the dispersion map of the system and confirmed by simulating a case involving a dispersive gain and loss medium with a commercial finite-element solver. These results are beneficial for optical signal processing on a subwavelength scale.