The Theoretic And Experiment Study On Ultrafast Nonlinear Interferometer

With the rapid development of all optical networks, the long-haultransmission of the optical signal has to be improved also. The opticalsignals will degrade by many disadvantageous factors,which limit thetransmission speed and distance of the optical signal. All-optical 3Rregeneration can solve this problem well. Optical decision gate is avital component in all-optical 3R regeneration. In this paper, wespread our work on UNI in following aspects.1. At first the basic principle and performance of several decisiongates are analyzed, then their characteristics anddevelopment are introduced respectively, and theiradvantages and disadvantages are also compared.2. SOA is studied in detail theoretically, gain response andrecover characteristic are analyzed by solving the transportequation numerically, its gain is discussed when parametersare altered. The experiment of 40Gbit/s wavelengthconversion is presented. Emphasis on reducing pattern effectby using a tunable narrow-band filter at the output port. Theanalysis of the result shows that it's a viable method toimprove the system performance.3. The basic principle of UNI is studied in detail, its switchingwindow is discussed when the parameters are changed.Switch characteristic of UNI is analyzed in detail. We bringforward how to design a UNI.4. The experiment of 40Gbit/s UNI is developed. Comparing thepictures of experiments with the diagrams of computersimulation. We can get the diagrams of computer simulationwhich accord with the pictures of experiments and can analyzethe experiments reasonably when we altered the parameters.