Efficient Wide Range Telecom Wavelength Conversion in Hydrogenated-Amorphous Silicon-Polymer Waveguide

In this paper, we present a highly efficient second harmonic generation in near-infrared region, from λ = 1.55 μm to λ=0.775 μm, using hydrogenated-amorphous silicon slot waveguide coated with a nonlinear polymer. The necessary phase matching condition is fulfilled through quasi-phase matching by periodically poling the nonlinear polymer filled the slot region of the waveguide. A conversion efficiency of P2ωlPω = 12 % is predicted for a low pump power of 10 mW in a propagation distance of 2.4 mm. This result is comparable to the previously reported values but with a smaller device length and lower pump power.