Theoretical and Experimental Research of the Dispersion Character of Photonic Crystal Fiber
|School||National University of Defense Science and Technology|
|Keywords||photonic crystal fiber dispersion measurement dispersion simulation supercontinuum interference method|
Photonic crystal fiber (PCF) is a new type of microstructured fiber. Because of its novel structure, PCF has a lot of unique characteristics, which is used widely on military and civilian affairs. And many of its applications are related with the dispersion characteristics. In this thesis, the methods of experimental measurements and numerical simulation are employed to study the dispersion character of photonic crystal fiber.Firstly, the character of photonic crystal fiber is introduced started with the classifying of the photonic crystal fiber. The dispersion character of photonic crystal fiber is introduced emphatically. And it is clarified that dispersion measurement method for photonic crystal fiber is needed peremptory.Secondly, the dispersion character of photonic crystal fiber is simulated with the CUDOS MOF Utilities soft ware and the Empirical relations method. The result is also analyzed and compared in the thesis.Then, a setup based on Mach-Zehnder interferometer and supercontinuum white light is used for ultra-broadband dispersion measurement of photonic crystal fiber. Three fibers, a highly nonlinear TIR-PCF, a PCF with bigger core, and a traditional single mode fiber, are measured in this thesis. The measured dispersion coefficients of the two PCFs are well in agreement with the simulation results, which proves the efficiency of our dispersion measurement system.Finally, the future method of experimental measurement of PCF is prospected here. It is clarified that the interference method based on supercontinuumum white light will be the main method in the future, and will be used for commerce most possibly.