Acta Photonica Sinica, Volume. 43, Issue 9, 923002(2014)
A MIM Surface Plasmon T-splitter Based on a Stub Structure
A T-shaped splitter of the surface plasmon waveguide with a stub based on metal-insulator-metal structure was proposed. The relationship between transmission and structure parameters was investigated by Finite-difference time-domain method. The simulation results show that the periodical changes of surface plasmons power can be achieved by changing the width and length of stub structure in T-shaped waveguide. Also, the periodical changes of splitting ratio for changes of surface plasmons can be obtained by changing the stub structure position of the output port in the metal-insulator-me waveguide structure. When the splitting ratio get maximum(or minimum), T-shaped splitter can achieve the unidirectional propagation of changes of surface plasmons. Besides, the periodical changes of splitting ratio was explained based on the changes of surface plasmons interference theory.
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JIANG Ya-lan, WANG Ji-cheng, WANG Yue-ke, LIU Hong-jiao, LIU Cheng, GAO Shu-mei. A MIM Surface Plasmon T-splitter Based on a Stub Structure[J]. Acta Photonica Sinica, 2014, 43(9): 923002
Received: Jan. 17, 2014
Accepted: --
Published Online: Oct. 23, 2014
The Author Email: Ya-lan JIANG (yalan1212oo@126.com)