A. Hook et al., SOLITON-SUPPORTED PULSES AT NORMAL DISPERSION IN OPTICAL FIBERS, Journal of the Optical Society of America. B, Optical physics, 10(12), 1993, pp. 2313-2320
An analysis is made of the properties of a novel type of optical pulse
that may propagate stably at normal dispersion in optical fibers. The
stability is achieved by permitting two oppositely phased solitons co
propagate with the pulse. Because the pulse may be described by the or
dinary Schrodinger equation, well-known results can be used for obtain
ing detailed information about, for example, the pulse shape. In parti
cular, the possibility of observing stable excited pulse states is dem
onstrated.