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Structural Design And Numerical Simulation Of Photonic Crystal Fibers With High Birefringence

Posted on:2016-09-01Degree:MasterType:Thesis
Country:ChinaCandidate:L Y WangFull Text:PDF
GTID:2348330479452568Subject:Condensed matter physics
Abstract/Summary:PDF Full Text Request
In recent years, with the successful drawing of photonic crystal fiber, the research of photonic crystal fiber has become a hot topic. Photonic crystal fiber, known as microstructure fiber, has more superior characteristics than traditional fiber because of its flexible structure design and numerous adjustable parameters, such as endless single mode transmission characteristics, adjustable mode-field area, controllable dispersion, high nonlinearity etc..This paper primarily researches on high birefringence of photonic crystal fiber, high birefringence characteristic is one of its important characteristics which is superior to the traditional optical fiber. Along with the maturity of photonic crystal fiber theory analysis method, a variety of cross-section structure of photonic crystal fiber are emerging continuously. In optical fiber transmission system, high birefringence photonic crystal fiber gradually achieve system miniaturization. Therefore, researches on high birefringence photonic crystal fiber is very important.First, the classification and characteristics of photonic crystal fiber are briefly introduced in this paper, and the present situation of high birefringence photonic crystal fiber are summarized. Several theoretical study of PCF is enumerated. Focuse on introducing the Finite Element Method and finite element analysis software Comsol Multiphysics.Secondly, a dual-core high birefringence photonic crystal fiber is designed, and its birefringence achieved 21.65 10-? at 1550 nm wavelength, the numerical values is an order of magnitude higher than ordinary photonic crystal fiber. Comsol Multiphysics software has be carried on the simulation to the fiber, and its birefringence characteristics is in-depth and detailed analysised. In addition, other characteristics of the optical fiber are analysised, such as area feature mode field and nonlinear coefficient characteristics.Then, a high nonlinear large negative dispersion highly birefringence photonic crystal fiber is designed. Its Nonlinear characteristics is used in nonlinear optical applications in many spheres, such as the application of the super continuum. And its dispersion properties can be used as the dispersion compensation fiber. The PCF's birefringence nonlinear coefficients and negative color values achieved B=9.2310-2??x=2852 W-1?km-1??y=3695 W-1?km-1?Dx=336466 ps ?nm-1?km-1?Dy=340975 ps ?nm-1?km-1 respectively, at 1550 nm wavelength. Comsol Multiphysics software has be carried on the simulation to the fiber, and its birefringence, nonlinear characteristics, dispersion characteristics are in-depth and detailed analysised.In summary, two kinds of high birefringence photonic crystal fiber has been designed. Systems theory presentation, detailed numerical simulations, as well as fiber characteristics rigorous analysis are used to guide the design of high birefringence photonic crystal fiber.
Keywords/Search Tags:Photonic Crystal Fiber, Finite Element Method, High Birefringence
PDF Full Text Request
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