The existence of nonlinear quadratic defects in 1D optical waveguides causes the resonant light scattering, which can be associeted with the Fano resonance.

Abstract: We study resonant light scattering in arrays of channel optical waveguides in which tunable quadratic nonlinearity is introduced as nonlinear defects by periodic poling of single (or several) waveguides in the array. We describe novel features of wave scattering that can be observed in this structure and show that it is a good candidate for observation of Fano resonance in nonlinear optics.

Keywords: optical solitons; scattering

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