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A Mg:LiNbO3-based adhered ridge waveguide was fabricated by dry etching on a silicon platform. Efficient QPM-SHG (normalized efficiency: 450%/W) and -DFG (efficiency: -9.8 dB for pump power 38 mW) were achieved in the telecommunication band.
A nonlinear optical device is demonstrated on a silicon substrate for hybrid silicon photonics. Efficient second harmonic generation is achieved at telecommunication wavelength by quasi-phase matching in Mg:LiNbO3 core with a ridge waveguide structure. A normalized conversion efficiency of 220%/Wcm2 is obtained at a fundamental wavelength of 1581.5 nm.
Efficient wavelength converter was demonstrated in low-loss adhered ridge waveguide fabricated by dry etching in periodically poled Mg:LN. We obtained highest SHG efficiency of 4500 %/W in telecom band for 32 mm interaction length.
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