Abstract
Self-trapped beams or spatial solitons may be considered promising candidates for all-optical processing, steering and routing schemes. Thus the search for these localized nonlinear objects in materials with reasonable response times (ps) and low power levels (mW) is still a subject of active research. Semiconductor optical amplifiers (SOA) are potential candidates to meet these requirements. A decade ago there have been reports of self-trapped beams, interpreted as spatial solitons, in SOA’s at 100 mW power levels over distances of a few diffraction lengths.1 But these solitons are unstable because of an unstable background.
© 2002 Optical Society of America
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