Analyses Of Light Propagation Characteristics In One-dimensional Metal-dielectric Nanometer Periodic Structure

When the traditional optical circuits decrease to nanometer scale, the diffraction limit,which is suffered by the spatially localization of light energy, can be overcome by using thesurface plasmon (SP). The metal-dielectric nanometer periodic structure, as an important load ofSP, has a lot of unique properties and functions, which has been applied to many fieldsincluding biology, cure, energy and communication. Recently, with the mature ofnanotechnology, metal-dielectric nanometer periodic structures attract greatly attentions, inwhich the fundamental one-dimensional metal-dielectric nanometer periodic structure is beingbecoming the hot topic of current researches.This thesis, by combing the SP exciting at the metal-dielectric interface with theperiodicity of the structure, studies the light propagation characteristics of one-dimensionalmetal-dielectric nanometer periodic structure. This structure can realize the limit andmanipulation of light energy at nano-scale. The thesis is divided into four chapters.In the first chapter, the research background, significant and the current study situation ofmetal-dielectric nanometer periodic structure are reviewed, and the main research contents ofthe thesis are given.In the second chapter, the numerical calculation methods of the metal-dielectric nanometerperiodic structure are introduced. The transfer matrix method and the finite-difference time-domain method are explained in detail, and three cases for each method are discussed, includingthe ordinary material, the loss and dispersive material and the nonlinear material.In the third chapter, the light propagation characteristic of the nanometer periodic structurebased on the metal-coated dielectric waveguide is analyzed. The light propagation properties ofthe periodic structure are separately discussed in two cases including the transverse andperpendicular periodicity formed by the metal-coated dielectric waveguide, when the directionof the incident light is parallel to the interface of the metal-dielectric. For the perpendicularperiodicity, the transmission enhancement effect is studied in the metal-coated dielectricwaveguide with periodic perpendicular cuts; for the transverse periodicity, the tunable outputphase of the metal-dielectric waveguide array is investigated in detail.In the fourth chapter, the light propagation characteristics of the nanometer periodicstructure based on the metal-dielectric multilayers are analyzed. First, the multi-channel filteringproperty of the metal-dielectric periodic photonic multilayers transformed by the metal- dielectric waveguide array is studied, when the direction of the incident light is perpendicular tothe interface of the metal and dielectric. Next, due to the loss of metal, in order to obtain theperfect transmission, the dielectric periodic photonic multilayer structure is designed. Then, byutilizing the loss of metal, the tunable multi-channel nonreciprocal perfect absorption isobtained in a dissymmetry metal-coated dielectric periodic photonic multilayer structure.In the fifth chapter, the conclusions and potentially applications of the work are given.In summary, the propose and the theoretical analysis of the one-dimensional metal-dielectric nanometer periodic structures, not only provide the theory advise for the design,production and application of it, but also offer certain reference meaning for the exploration ofthe light propagation properties in the two-and three-dimensional metal-dielectric nanometerperiodic structures.