Lithium Niobate: The Silicon of Photonics!
The possibility of periodically engineering the nonlinearity (χ (2)) of LiNbO3 in one, two dimensions or also in quasi-periodic manner by mean of electric field poling enables high conversion efficiencies in nonlinear optical interactions employing the Quasi-Phase-Matching (QPM) technique . Moreover, by employing common micro fabrication or UV writing techniques is possible to fabricate surface waveguides (Fig. 42.1d) for more compact and efficient surface photonic devices.
KeywordsPhotonic Crystal Lithium Niobate Mobile Telephone Wavelength Converter High Conversion Efficiency