Research On Teraherta Filter's Simulation And Fabrication

Being situated between infrared and microwave, terahertz wave is usually defined as the frequency from 0.1 THz to 10THz.With a great importance in scientific research and applications, terahertz is regarded as not only the transitional region between electronics and optics in the domain of spectroscopy, but also the cross area from the classical theory of macrophysics to microcosmic quantum mechanics. In a long time, terahertz is always a gap in the research of electromagnetism, so be called "the terahertz gap". But some research has to turn to higher frequency, because of the limitation of the electromagnetic resource and accompanying with the speedy development of the communications simultaneously. Furthermore, the resource of low frequency being occupied in current is the other reason. Otherwise, THz apparatus is also promoted by the trend of personal multimedia becoming smaller and more portable. In a word, all these factors quicken the research and developments of THz theory, and also be the essential meaning of this thesis. This thesis starts with the concept-THz SRRs (split-ring resonators), and simulates the structure with CST software. In next step, we make a research in multi-structures with theoretical calculations and CST simulations. On the basic of all the research mentioned ahead, we push out the research of THz filter, and also with theoretical analysis of the stimulation's results. Finally, we pick up some structures, and make them laboratory samples with both general metallic and superconductive film by micro-fabricated experiments. When the samples are done, we measure them in TDS (Terahertz time-domain spectroscopy) system, and analyze reasons which bring forth the difference between measurements and simulation's results. Hoping these analyses could improve the following researches.