Abstract

A device capable of adjusting gap plasmon (GP) transmission and intensity is proposed. The structure consists of two metallic films: one is etched with a nanoslit, and the other below is movable. Between them is a horizontal air channel. Numerical simulations show that the GP sources can produce alternatively in ports A and B when the film below is moved together with a groove in the center; thus, a sawtooth-like waveform is observed, which is different from the sine-like case without a groove and can be explained well by Fourier series. In addition, with the optimized length of film below, the source intensity can be further enhanced for Fabry–Perot resonance producing in both channels A and B.

© 2010 Optical Society of America

A tunable unidirectional surface plasmon polaritons source

Yueke Wang, Xueru Zhang, Haijun Tang, Kun Yang, Yuxiao Wang, Yinglin Song, Tai-huei Wei, and C. H. Wang
Opt. Express 17(22) 20457-20464 (2009)

Plasmonic Tamm states in insulator–metal–insulator waveguides

Linyu Niu, Yinxiao Xiang, Wei Cai, Xiaomin Zhao, Ni Zhang, Jiwei Qi, Xinzheng Zhang, and Jingjun Xu
J. Opt. Soc. Am. B 35(6) 1368-1373 (2018)

Slow-light dark solitons in insulator–insulator–metal plasmonic waveguides

E. P. Fitrakis, Thomas Kamalakis, and Thomas Sphicopoulos
J. Opt. Soc. Am. B 27(9) 1701-1706 (2010)

Slow light in insulator–metal–insulator plasmonic waveguides

Emmanouil-Panagiotis Fitrakis, Thomas Kamalakis, and Thomas Sphicopoulos
J. Opt. Soc. Am. B 28(9) 2159-2164 (2011)

Nanocavity antenna array for enhancing extraordinary optical transmission of light through a metallic nanoslit

Yanxia Cui, Jun Hu, and Sailing He
J. Opt. Soc. Am. B 26(11) 2131-2135 (2009)