This paper presents the theory and modeling of an all-optical device which realizes self-routing of waves at different wavelengths. The device exploits spatial soliton interaction in a Kerr-like nonlinear medium and can be used in wavelength division multiplexing (WDM) networks with fixed tuned receivers and tunable transmitters. Interaction is governed by four-wave mixing (FWM) that produces the desired effects under suitable excitation conditions. Several numerical examples are given, which highlight the importance of an optimum choice for the spectrum of wavelengths.
Franco Chiaraluce, Ennio Gambi, and Paola Pierleoni, "Design of an All-Optical Wavelength Router Based on Spatial Solitons," J. Lightwave Technol. 17, 1670- (1999)