Analysis And Simulation Of Plastic Photonic Crystal Fiber's Dispertion Etc.Properties

With the development of society, more and more information are required, and the optical fiber communication has been the main carrier of modern communications network. The novel photonic crystal fiber which has unusual features had been a research hotspots. Photonic crystal fiber is superior to conventional optical fiber and it will become an important buckstay of optical devices in place of conventional optical fiber. As far as plastic photonic crystal fiber is concerned, it has the merit of both plastic fiber and photonic crystal fiber, and in all probability becomes the first choice media of short-distance and medium and small capacity optical fiber communication system. Based on the study of a great number of references, this paper introduces the achievements and developments of finite difference beam propagation method, photonic crystal fiber, and plastic photonic crystal fiber, respectively. Then, the principle, the formula, the numerical analysis and the selecting condition of beam propagation method which is usually applied in the computer simulation of optical wave-guide devices are introduced at some length, and improved for the shape of boundary layer according to the structure of optical fiber. Secondly, the dispersion property of ring-structured plastic photonic crystal fiber is simulated in computer with finite difference beam propagation method. The variation rules of dispersion properties with both wavelength and air holes have been found. The zero dispersion in the visible light region by appropriate design of plastic photonic crystal fiber can be obtained. Finally, the principle of effective index method is introduced. Endlessly single-mode property, number aperture, mode field radius, coupling loss and bending loss of plastic photonic crystal fiber are researched. The paper also had analysed the variation rules of the properties with variation of the structure of the fibers.