Theoretical Study And Fabrication On Terahertz Photonic Crystal Fiber

THz waves refer to the electromagnetic waves whose frequencies range from 100 GHz～10 THz on the electromagnetic spectrum. Since their frequencies are between millimeter waves and infrared waves, the research method of THz waves could be either from microwave or optics. Due to the great nature of THz waves, they are very effective in various research fields such as defense, aviations, and medical science, etc. Thus it is quite valuable to pay attention on THz technology. Recently, there are several breakthroughs on THz research and the THz source, detector, waveguide and resonance device have been developed successfully.The research work on photonic crystal fibers (PCF) could be cast back to more than ten years. Comparing to traditional optical fibers, PCF gets some novel properties such as endless single mode, novel dispersion, high birefringent, etc. Now, THz PCF has been a dynamic topic in THz waveguide device research.The methods employed to analyze the fibers mainly include analytical and numerical methods. Since the complexity of the structure, PCF is mostly calculated by numerical methods. In our paper, we compared several numerical methods and chose multipole method as our main way to access and discuss PCFs according to the properties of PCF's structures.In this paper, we designed a new kind of rectangular PCF based on the traditional PCF theory and application, which displays high birefringent, low loss and dispersion, etc. Numerical results from multipole method showed that the new PCF match our request quite well.After analyzing the PCF, we put forward a scheme to fabricate the sample fiber according to our design. Finally, we execute the fiber fabrication by perfusion technics.