2. High Repetition Rate Pulse Source Using Pulse Compression through Optical Fiber

For next-generation optical networks, it is expected that transmission capacity will be increased by making high channel density and wide band WDM systems, and increasing data bitrate per wavelength channel. The high bitrate per channel system has great potential for cost reductions in comparison with wide broaden DWDM systems of the same transmission capacity, because of a fewer number of channels and simple control of wavelength dependence. To realize a high-speed transmission system of more than 40 Gbps per channel, electrical signal processing speed at transmitters and receivers is the limiting factor. Accordingly, all-optical signal processing is necessary for signal switching and down rate conversion to use electrical signal processing. For an advanced optical transmission system using all-optical signal processing, it is desirable to have a new technique whereby the optical fiber devices use nonlinear effects through fibers. In this report, for the purpose of developing an optical clock pulse generator that is used for the optical signal processing, we have researched short pulse generation by Comb-like Dispersion Profiled Fiber (CDPF) using a high nonlinearity fiber. 2. HIGH REPETITION RATE PULSE SOURCE USING PULSE COMPRESSION THROUGH OPTICAL FIBER