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The reorientational nonlinearity of nematic liquid crystals enables aself-localized spatial soliton and its waveguide to be deflected or destroyedby a control beam propagating across the cell. We demonstrate a simpleall-optical readdressing scheme by exploiting the lens-like perturbationinduced by an external beam on both a nematicon and a co-polarized guidedsignal of different wavelength. Angular steering as large as 2.2 degrees wasobtained for control powers as low as 32mW in the near infrared

Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals