Study Of Graphene-based Hybrid Plasmonic Waveguides And Related Devices

In the past few decades,Moore’s Law has been leading the development of integrated electronics.From the development of integrated electronics,it can be known that reduce the size of photonic devices and integration will be the key to improve the development of integrated photonics.And take the advantage of waveguides based on surface plasmon,which can break the diffraction limit,is an important way to develop photonic integration.And,graphene,because of its unique photoelectric and mechanical properties have attracted much attention,is considered to be a new choice of being used in plasmonic waveguides instead of precious metals.This paper is based on previous work,focusing on the plasmon surface properties of graphene in THz,graphene-based terahertz waveguides and related polarizer.The finite element method is the main research method in this paper.It is started with an ordinary graphene-based hybrid plasmon waveguide.To understand its polarization,transmission loss,and many other characteristics,the waveguide is simulated with FEM to verify the graphene plasmon theoretical argument.And on this basis,several improved graphene-based plasmon waveguide with new structure are proposed,the waveguide continuously improve integration and polarization properties of the waveguide.And on the basis of research on graphene waveguides,this paper discusses graphene-based THz polarization beam splitter.By studying the graphene-based waveguide,this paper presents the final design of several highly integrated,low-loss and polarization insensitive graphene waveguides,which can be used in a variety of THz waveguide device.Also proposed the use of graphene waveguide design and simulation of a waveguide having a graphene-based polarization beam splitter high extinction ratio.