A Sub-wavelength Electro-optic Switch Based on Plasmonic T-Shaped Waveguide |
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| Authors: | Xian Mei Xu Guang Huang Tao Jin |
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| Affiliation: | (1) Key Laboratory of Photonic Information Technology of Guangdong Higher Education Institutes, South China Normal University, Guangzhou, 510006, China;(2) Division of Microelectronics, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore; |
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| Abstract: | A sub-wavelength electro-optic switch based on plasmonic T-shaped waveguide has been proposed and numerically investigated.
The finite-difference time-domain simulation results reveal that the switch based on T-shaped waveguide with two U-shaped
grooves can realize the function of switching single wavelength from one port to the other by an external voltage. The U-shaped
structure is composed of two teeth filled with highly nonlinear organic EO material and one groove filled with 6H-SiC connecting
the two teeth. The switch wavelength can be chosen by adjusting both lengths of the left and right teeth, and the switch voltage
is 3.35 V for the wavelength of λ = 730 nm with the insertion loss around −2.6 dB and the extinction ratio around −20 dB at port 2. |
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