Soliton self-frequency shift and compression of pulses at 10 GHz repetition rate in photonic crystal fiber

摘要

Soliton self-frequency shift (SSFS) and simultaneous compression of mode-locked pulses at 10-GHz-repetition-rate are demonstrated in photonic crystal fiber. We obtained sub-300 fs pulses with wavelength tunable range up to 1.68 μm using 1.1-ps width and 1.56-μm wavelength pulses from a 10-GHz modelocked erbium fiber laser. The use of photonic crystal fiber with high nonlinearity (62 W~(-1)km~(-1)) and" large anomalous dispersion (119 psm/km) at 1550 nm made it possible to achieve such wideband conversion in only 12.6-m long fiber.