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A Sub-wavelength Electro-optic Switch Based on Plasmonic T-Shaped Waveguide

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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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Acknowledgment

The authors acknowledge the financial support from the National Natural Science Foundation of China (NSFC) (Grant No. 61077038) and the Natural Science Foundation of Guangdong Province, China (Grant No. 07117866).

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Authors and Affiliations

  1. Key Laboratory of Photonic Information Technology of Guangdong Higher Education Institutes, South China Normal University, Guangzhou, 510006, China

    Xian Mei & Xu Guang Huang

  2. Division of Microelectronics, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore

    Tao Jin

Authors
  1. Xian Mei
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  2. Xu Guang Huang
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  3. Tao Jin
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Correspondence to Xu Guang Huang.

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Mei, X., Huang, X.G. & Jin, T. A Sub-wavelength Electro-optic Switch Based on Plasmonic T-Shaped Waveguide. Plasmonics 6, 613–618 (2011). https://doi.org/10.1007/s11468-011-9242-3

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  • DOI: https://doi.org/10.1007/s11468-011-9242-3

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