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Numerical investigation of an all-optical switch in a graded nonlinear plasmonic grating

Wang, Guoxi, Lu, Hua, Liu, Xueming and Gong, Yongkang 2012. Numerical investigation of an all-optical switch in a graded nonlinear plasmonic grating. Nanotechnology 23 (44) , 444009. 10.1088/0957-4484/23/44/444009

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Abstract

We have proposed and numerically investigated an all-optical switch based on a metal–insulator–metal waveguide with graded nonlinear plasmonic gratings. The influences of grating depth and refractive index of a Kerr nonlinear medium on the transmission of the switch are exactly analyzed by utilizing transmission line theory. The finite-difference time-domain simulation results show that the highly compact structure possesses excellent switch function by tuning the incident electric field intensity. In addition, the simulation results show that this all-optical switch has an ultrawide operating frequency regime and femtosecond-scale response time (~130 fs). Such a switch can find potential applications for all-optical signal processing and optical communication.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: IOP Publishing: Hybrid Open Access
ISSN: 0957-4484
Last Modified: 01 May 2019 13:00
URI: http://orca.cf.ac.uk/id/eprint/119603

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