14 November 2017 Tunable surface waves in nonlinear graphene-based one-dimensional-photonic crystal
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Abstract
The nonlinear TE surface waves guided by an interface of a semi-infinite Kerr-type dielectric medium and a one-dimensional graphene-based photonic crystal have been investigated using the transfer-matrix method. It is shown that increasing the intensity of the incident beam drastically changes dispersion behavior inside the graphene-induced photonic band gap as a result of nonlinearity. Also regarding the simulation results, it reveals that the peculiar dispersion that is governed by a nonlinear structure appeared to be tuned by graphene conductivity via an external electric field. Applying such an electric field makes it possible to easily tune the nonlinear surface waves at the desired frequency only by adjusting the chemical potential of the graphene. Also, it is shown that for application purposes, the results of studies can be applied to the case in which graphene nanolayers are embedded by identical dielectric constant, i.e., zero permittivity contrast of dielectric.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Babak Tavakkoly Moghaddam, Babak Tavakkoly Moghaddam, Samad Roshan Entezar, Samad Roshan Entezar, Ebrahim Safari, Ebrahim Safari, Amir Madani, Amir Madani, } "Tunable surface waves in nonlinear graphene-based one-dimensional-photonic crystal," Journal of Nanophotonics 11(4), 046010 (14 November 2017). https://doi.org/10.1117/1.JNP.11.046010 . Submission: Received: 1 August 2017; Accepted: 17 October 2017
Received: 1 August 2017; Accepted: 17 October 2017; Published: 14 November 2017
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