The Study Of Fabricating Photonic Crystal By Holographic Interference Method With A Single Prism And Polymer Electro-optic Modulators

For photon, there is no interaction between each other, and it has large transmission bandwidth. As the information technology is developing, photon, as information carrier, because of its above properties, has attracted more and more people's attention. During the present development of information and communication technology, the development of opoto-electric technology is playing a key role. At present, one of the development directions of optical communication is to realize full optical communication. And to realize full optical communication, the problem how to control the movement of photons has to be solved.In 1987, photonic crystal concept has been proposed, which attracted the attention of science field, and found a method to control the movement of photons. Photonic crystal is a cross research field, which is related to optics, electromagnetics, crystal, and is an important research field of opto-electrics. Many concepts of photonic crystal has come from crystal theory, such as energy band structure, forbidden band and etc. Researching about photonic crystal can be summarized into some aspects as follows: principle of photonic crystal, fabrication method and application. In this paper, it researched the periodic and quasi-periodic photonic crystal structure fabricated by interference method with a single prism from theory, analyzed the working property of polymer electro-optic modulator, and also measured the electro-optic coefficient of some kind of polymer material from experiment. The content of each chapter is as follows:Chapter one, photonic crystal's basic theory was discussed, and the present research, common fabricating methods and its primary applications were summarized.Chapter two, the theory of making photonic crystal by holographic interference, especially by lens was researched. And the optical lattices fabricated by lens interference under some conditions were simulated.Chapter three, slow light effect is a popular research topic in the present opto-electric field. Common methods to excited slow light is through using high dispersion material or high dispersion structure, in which photonic crystal waveguide is a kind of structure to excite slow light. In this chapter, the theory of slow light was analyzed, and the slow light effect of a kind of photonic crystal wave guide was simulated.Chapter four, poled polymer electro-optics effect, and applications in electro-optics modulator were discussed, and the problems in the present electro-optics modulator research, and the improvement method were analyzed. The principle to enhance electro-optics modulator performance by using photonic crystal slow light effect, and also the present research situation were analyzed.Chapter five, experiment part. A film of polymer electro-optic material was spin-coated on the surface of ITO glass. And the films were poled under some conditions and their electro-optics coefficients were measured. This kind of polymer material possesses very high electro-optic coefficient, and is adapt to be used for high performance electro-optics modulators.