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Tunable slow light based on plasmon-induced transparency in dual-stub-coupled waveguide

Wang, Guoxi, Zhang, Wenfu, Gong, Yongkang and Liang, Jian 2015. Tunable slow light based on plasmon-induced transparency in dual-stub-coupled waveguide. IEEE Photonics Technology Letters 27 (1) , pp. 89-92. 10.1109/LPT.2014.2362293

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We investigate the plasmon-induced transparency (PIT) effect in dual-stub-coupled metal-insulator-metal waveguide. The transmission line theory is employed to analyze the relationship between the transmission properties and geometrical parameters. It is found that by incorporating tunable refractive index materials with the proposed structure, a tunable PIT and slow light effect can be obtained in a constant stub separation design. The theoretical results show that a shift of 70 THz in the central wavelengths of transparency window can be obtained when the refractive index of the dielectric varies. In addition, the group index can be tuned from 24 to 36, which provides an effective method to adjust the slow light properties in the proposed waveguide. This letter opens up the possibility for the realization of tunable slow light devices in highly integrated optical circuits.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
ISSN: 1041-1135
Date of Acceptance: 3 October 2014
Last Modified: 24 Apr 2019 11:15

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