We report the experimental observation of bright temporal solitonlike pulses propagating in a material with a negative nonlinearity and positive (normal) dispersion. We believe this to be the first observation of bright solitonic pulses in a material with a negative Kerr nonlinearity. We have observed a gradual narrowing of the output pulse width as a function of increasing input power, and our results agree well with simulations.
© 1996 Optical Society of America
P. Dumais, A. Villeneuve, and J. S. Aitchison, "Bright temporal solitonlike pulses in self-defocusing AlGaAs waveguides near 800 nm," Opt. Lett. 21, 260-262 (1996)