Experimental And Theoretical Research On Nonlinear Properties Of Microstructured Fiber

These research works of this dissertation are supported by the National Basic Research Program of China, the National 863 High Technology Project of China, the Key Grant Project of Chinese Ministry of Education and Co-Constructed project of Beijing Education Board.Optical fibers are changing their structure. Fibers of a new architecture—Microstructured Fibers(MFs)—are emerging as a powerful tool for optical physics, biomedicine, photochemistry and many other applications. MFs are a new kind of product which must play an important role in the development of communication system. MFs have many unique properties compared to traditional fibers and they are very important to the miniaturization and integration of optical devices in DWDM system.In this dissertation, the nonlinear properties of microstructured fibers are mainly studied. The main research results are listed below:1. Research on nonlinearity and effective area of microstructured fiber using Finite-Difference Time-Domain method by changing the air hole size and the pitch in MF's cladding. Variational regularity of the effective area and nonlinearity coefficient with the structure parameters of MF at 1550nm is found. The analysis result provides the referential background of the design for the highly nonlinear MF.2. The characteristics of ultra-short pulses propagation in MFs which have typical dispersion profiles are analyzed. Numerical simulations show that group velocity dispersion and self-phase modulation take...