Abstract
In this paper, one-dimensional (1D) and two-dimensional (2D) graphene-based plasmonic photonic crystals (PhCs) are proposed. The band structures and density of states (DOS) have been numerically investigated. Photonic band gaps (PBGs) are found in both 1D and 2D PhCs. Meanwhile, graphene-based plasmonic PhC nanocavity with resonant frequency around 175 THz, is realized by introducing point defect, where the chemical potential is from 0.085 to 0.25 eV, in a 2D PhC. Also, the bending wvaguide and the beam splitter are realized by introducing the line defect into the 2D PhC.
Highlights
Photonic crystals (PhCs), first proposed by Yablonovitch [1] and John [2], have attracted great attention due to their unique properties, such as the self-collimation which can be applied to confine and guide light in photonic integrated circuits [3], the negative refraction which can be employed to focus light on a scale less than the square of light wavelength [4]
Surface plasmon polaritons (SPPs), the electromagnetic waves propagating along an interface between a metal and a dielectric, enable the confinement of electromagnetic field to scales far below the optical diffraction limit [13]
Unlike the conventional plasmonics based on noble metals, graphene supported surface plasmon polaritons (SPPs) have demonstrated extremely high confinement, highly tunability via electrical gating and chemical doping [26,27,28], and relatively low loss resulting from long plasmon lifetime [29,30]
Summary
Photonic crystals (PhCs), first proposed by Yablonovitch [1] and John [2], have attracted great attention due to their unique properties, such as the self-collimation which can be applied to confine and guide light in photonic integrated circuits [3], the negative refraction which can be employed to focus light on a scale less than the square of light wavelength [4]. Unlike the conventional plasmonics based on noble metals, graphene supported SPPs have demonstrated extremely high confinement, highly tunability via electrical gating and chemical doping [26,27,28], and relatively low loss resulting from long plasmon lifetime [29,30]. These extraordinary properties make graphene a promising candidate for plasmonic material with broad applications from terahertz to mid-infrared span [31,32,33,34]. These results provide new insight into the designing of PhC devices, including PhC waveguides, PhC nanocavities, plasmonic filter, plasmonic switch, etc
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
