All Optical Wavelength Conversion Based On Four Wave Mixing In Non-linear Optical Fiber

The all-optical wavelength converter (AOWC) has won world wide attention due to its wide applications. Among many schemes to implement the AOWC, Four-wave Mixing (FWM) based on nonlinear optical fiber has shown its excellent quality and great potential application, so it becomes an ideal selection for AOWC. With the progress of research and experimental technology, Optical Converter based on Four-wave Mixing (FWM) in nonlinear optical fiber will play very important role in future optical communication systems.We did both theoretical and experimental research on AOWC design based on FWM in nonlinear fiber, and several productions have been carried out in the dissertation:(1) The optimization design of tunable wavelength converter based on one pump experimental scheme has been done. Through analysis for phase matching condition and formula of wavelength conversion gain, by changing endogenous and exogenous parameters (such as signal wavelength, pump power and fiber characteristics), we can improve the quality of AOWC (increase the wavelength conversion efficiency and the tunable conversion band, decrease the depth of hollow). Besides, we offer the experimental result for one-pump scheme.(2) We discuss the origin of Stimulated Brillouin Scattering effect in fibers. We also make the comparison of different schemes for the suppression of SBS. We will put our emphasis on"Chirp"Method, which significantly increases the conversion efficiency in our experiment.We wish to make contributions for the AOWC technology developments and its application in all-optical network.