Plasmonic optical switches based on Mach-Zender interferometer

Zhu, Jia-Hu; Huang, Xu-Guang; Xu, Wei; Chen, Luan Xiong
July 2011
Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p072112
Academic Journal
Electro-optical switches composed of two Mach-Zehnder interferometer waveguides filled with 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) have been proposed and investigated. The characteristics of the switch waveguide are analyzed. The finite-difference time domain simulation results reveal that the structure can operate as an optical switch by controlling the voltage V1 or V2 applied on the region filled with the DAST material with the π phase shift voltage as Vπ = 2.9 V. The structure has a small dimension of hundreds of nanometers.


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