Abstract

A nanometeric plasmonic filter with a symmetrical multiple-teeth-shaped structure is investigated theoretically and numerically. A tunable wide bandgap is achievable by adjusting the depth and number of teeth. This phenomenon can be attributed to the interference superposition of the reflected and transmitted waves from each tooth. Moreover, the effects of varying the number of identical teeth are also discussed. It is found that the bandgap width increases continuously with the increasing number of teeth. The finite difference time domain method is used to simulate and compute the coupling of surface plasmon polariton waves with different structures in this Letter. The plasmonic waveguide filter that we propose here may have meaningful applications in ultra-fine spectrum analysis and high-density nanoplasmonic integration circuits.

© 2016 Optical Society of America

A narrow-band subwavelength plasmonic waveguide filter with asymmetrical multiple-teeth-shaped structure

Jin Tao, Xu Guang Huang, Xianshi Lin, Qin Zhang, and Xiaopin Jin
Opt. Express 17(16) 13989-13994 (2009)

Systematical research on characteristics of double-sided teeth-shaped nanoplasmonic waveguide filters

Jin Tao, Xu Guang Huang, Xianshi Lin, Jihuan Chen, Qin Zhang, and Xiaopin Jin
J. Opt. Soc. Am. B 27(2) 323-327 (2010)

Tooth-shaped plasmonic waveguide filters with nanometeric sizes

Xian-Shi Lin and Xu-Guang Huang
Opt. Lett. 33(23) 2874-2876 (2008)

Numerical modeling of a teeth-shaped nanoplasmonic waveguide filter

Xianshi Lin and Xuguang Huang
J. Opt. Soc. Am. B 26(7) 1263-1268 (2009)

Ultra-high resolution filter and optical field modulator based on a surface plasmon polariton

Wenjun Wu, Junbo Yang, Jingjing Zhang, Jie Huang, Dingbo Chen, and Hongqing Wang
Opt. Lett. 41(10) 2310-2313 (2016)