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Plasmonic splitter based on the metal-insulator-metal waveguide with periodic grooves |
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| Authors: | Meng-Dong He Jian-Qiang Liu Yong-Feng Luo Wei Lu |
| Affiliation: | a Institute of Mathematics and Physics, Central South University of Forestry and Technology, Changsha 410004, People’s Republic of China b National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, People’s Republic of China c College of Science, Jiujiang University, Jiujiang 332005, People’s Republic of China |
| Abstract: | In this paper, we have proposed a plasmonic splitter which is composed of a subwavelength slit and two different metal-insulator-metal (MIM) waveguides with periodic grooves. The slit is used to excite surface plasmon polaritons (SPPs) at certain wavelengths. By setting the SPPs resonance wavelengths of the slit as the Bragg wavelengths of MIM waveguides, the SPPs of different wavelengths are able to be confined and guided in the two different MIM waveguides. The numerical results of two-dimensional finite difference time domain (2D-FDTD) demonstrate that our proposed structure is capable of splitting light into two MIM waveguides. |
| Keywords: | Splitter Metal-insulator-metal waveguides Surface plasmon polaritons |
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