We directly measure the time-independent nonlinear self-phase shift of a pulse after fiber propagation by spectral interferometry. Both the soliton and the nonsoliton case were studied. We verify numerically that the measured phase shift approximates this time-independent phase well.
© 1998 Optical Society of America
(060.2310) Fiber optics and optical communications : Fiber optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(190.0190) Nonlinear optics : Nonlinear optics
(320.5550) Ultrafast optics : Pulses
C. X. Yu, M. Margalit, E. P. Ippen, and H. A. Haus, "Direct measurement of self-phase shift due to fiber nonlinearity," Opt. Lett. 23, 679-681 (1998)