Three-wave envelope solitons: can the speed of light in the fiber be controlled

Theory predicts that three-wave envelope solitons (TWESs) can be generated in dual-mode optical fibers by injecting two copropagating lightwaves or a lightwave and a flexural acoustic wave. The mechanism of the three-wave interaction is the recently observed intermodal stimulated forward Brillouin scattering. The velocity of the TWES can be controlled by changing the pump power. Using 200-mW pump power for a typical dual-mode fiber can make the average speed of the light pulse in the fiber as low as 3*10/sup 4/ m/s.<
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