The Study On Plasmons-towards Micro And Nano Devices

Nowadays,the development of information technology has made quite a huge progress in the optical devices.The proposition and development of micro and nano optics has become the research focus.The development of the micro nano optics can be greatly promoted by the emergence of plasmons,which could break the diffraction limit.With the development of the manufacturing technique,the micro and nano optical devices can be further miniaturized and integrated.In this paper,we focus on the study on plasmons-towards micro and nano optical devices.We stated the developing process of micro and nano optics.We also discussed the development of micro and nano optical devices.At the same time,we studied the surface plasmon polaritons and graphene plasmon polaritons.We studied the graphene-dielectric hyperbolic metamaterials,analyzed hyperbolic dispersion relation,discussed the waveguide modes and verified the high refractive index of dielectric multilayer graphene waveguide structure.Then we constructed the slot waveguides.The coupling strength increases as the interspace between adjacent waveguides decreases,which further leads to a more obvious field enhancement effect in slot region.Based on the tunability of graphene surface conductivity,the optical gradient force corresponding to the symmetrical mode case,which exists between two waveguides has been analyzed systemically under different conditions.The investigation is valuable for the study of graphene metamaterial slot waveguide in future.In addition,we have proposed a resonator model consisting of Metal-Insulator-Metal(MIM)waveguides and a ring cavity.The surface plasmons polaritons supported in MIM waveguides have been utilized to study the characteristics of resonator.By artificially adjusting the local structural parameters to destroy resonator symmetry,the resonant wavelengths can be easily tailored without reconstructing the whole resonator structure.The study reveals that the proposed resonator should possess a great potential in applications like wavelength demultiplexer.It provides a new idea for the design and application of micro nano resonant cavity.