Study On Optical Properties Of Metallic Nanostructure Waveguides

Optoelectronic integration is an inevitable trend of the technological development, but the photonic and electronic circuits are not the same range so that they cannot be compatible with each other. The minimum size of the traditional optical device could only reach micron magnitude and the electronic device can already reach nanometer magnitude, so nano-optical device is an important research project. This will determine whether we can realize the miniaturization of optoelectronic integration, which is the nano-optoelectronic integration.Surface Plasmon Pol aritons can gather electromagnetic energy within the certain range and has a strong local-field enhancement effect, so it can break through the diffraction limit. And the size of the optical device could reach nanometer magnitude. It will achieve nano-optoelectronic integration to promote the development of science and technology into the new period. Optical waveguide is not only the important part of the photonic circuit but also the core of the research of optoelectronic integration.This paper studies the mode properties of the metallic nanostructure waveguides, calculates the mode area, the propagation length and analyzes the optical forces in the waveguides. In chapter1, it is introduced the relevant background, the basic concepts and the research significance. In chapter2, it is introduced the good qualities of the hybrid plasmonic waveguide which can simultaneously achieve subwavelength confinement and the long-range propagation. In chapter3, it is proposed a series of modified hybrid plasmonic waveguides based on hybrid plasmonic waveguide. The optical properties can be adjusted by altering the geometrical structure of the waveguides. And it is also explored the design of tunable nanoscale optical tweezers using the modified hybrid plasmonic waveguides. In chapter4, it is proposed a series of metallic nanowire-type with substrates plasmonic waveguides. And it studies the mode properties, calculates the mode area, the propagation length and the optical forces in the waveguides and so on. It is a significant theoretical model of the nanoscale optical tweezers which can be high precision, tunable and easy-to-handle. In chapter5, the summary and the prospects of our work are discussed.