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Opt Express. 2012 Jan 30;20(3):2974-81. doi: 10.1364/OE.20.002974.

Enhanced electro-optical lithium niobate photonic crystal wire waveguide on a smart-cut thin film.

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  • 1Institut FEMTO-ST, UMR 6174, Département d’Optique, 16 Route de Gray, 25030 Besançon Cedex, France.


We report an electro-optically tunable photonic crystal linear cavity etched on a 200 nm lithium niobate waveguide ridge. The photonic crystal cavity and the ridge are both fabricated on a 1 μm thin film of lithium niobate obtained by smart-cut technology. The photonic crystal, of area 4x0.8 μm2, has been engineered to work in a slow light configuration so that the electro-optic effect is 20 times more important than in bulk material.

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