Wavelength-conversion of pseudorandom pulses at 10 Gb/s by using soliton self-frequency shift in a photonic crystal fiber

We converted the wavelength of pseudorandom picosecond pulses at a 9.953 28-Gb/s rate over 30 nm by using soliton self-frequency shift in highly nonlinear and low-loss photonic crystal fibers. The conversion was achieved with a 28% efficiency in 12-m-long fibers, and the resulting solitons had a width as small as 340 fs. We also developed a novel scheme for reducing the pulse-position fluctuation that occurs during wavelength conversion of pseudorandom bit stream pulses with random amplitude fluctuations. We obtained clear eye diagrams for the converted output and the measured bit-error-rate performance approaching 10^-10.