The property of three-wave-interaction solitons to preserve their shape upon nonlinear interaction with an arbitrary-shaped radiation is proposed for the creation of all-optical switching devices. It is shown that three-wave-interaction solitons can be used for optical switching in a polarization-gate geometry. This new all-optical logic gate combines the advantages of soliton switching devices with the short length of a second-order nonlinear interaction. Feasibility of an all-optical logic gate based on two 1.5-cm-long β-barium borate crystals and with the intensity of the control pulse 190 MW/cm<sup>2</sup> is demonstrated.
© 1998 Optical Society of America
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2330) Fiber optics and optical communications : Fiber optics communications
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
Edem Ibragimov, "All-optical switching using three-wave-interaction solitons," J. Opt. Soc. Am. B 15, 97-102 (1998)