| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Double-Teeth-Shaped Plasmonic Waveguide Electro-Optical Switches |
| ZHU Jia-Hu, HUANG Xu-Guang**, MEI Xian
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Key laboratory of Photonic Information Technology of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006
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| Cite this article: |
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ZHU Jia-Hu, HUANG Xu-Guang, MEI Xian 2011 Chin. Phys. Lett. 28 088501 |
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Abstract An electro-optical switch based on a plasmonic T-shaped waveguide structure with a double-teeth-shaped waveguide filled with 4-dimethylamino-N-methyl-4-stilbazolium tosylate is proposed and numerically investigated. The Finite-difference time domain simulation results reveal that the structure can operate as a circuit switch by controlling the external voltages V1 and/or V2. The proposed structure can also operate as a variable optical attenuator, which can continuously attenuate the power of a light beam from 6 dB to 30 dB by an external electrical field. The structure is of small size of a few hundred nanometers. Our results may open a possibility to construct nanoscale high-density photonic integration circuits.
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| Keywords:
85.60.-q
42.79.-e
52.75.Kq
42.82.Et
42.82.Gw.
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Received: 10 December 2010
Published: 28 July 2011
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