Cross-phase modulation in a highly nonlinear microstructure optical fiber with low dispersion and high birefringence is used for the measurement of the pulse amplitude and phase of picosecond pulses by frequency-resolved optical gating. An alignment-free configuration including an optical amplifier is proposed and experimentally tested. The simulated annealing method is used for retrieving the amplitude and phase from cross-phase modulation spectrograms. It takes into account the birefringence of the measurement fiber and the resolution of the optical spectrum analyzer.
© 2005 Optical Society of America
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(320.7100) Ultrafast optics : Ultrafast measurements
P. Honzatko, J. Kanka, and B. Vrany, "Measurement of pulse amplitude and phase using cross-phase modulation in microstructure fiber," Opt. Lett. 30, 1821-1823 (2005)