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

H. Lu (1) , B. Sadani (1) , N. Courjal (1) , G. Ulliac (1) , N. Smith (2) , V. Stenger (2) , M. Collet (1) , F.I. Baida (1) , M.-P. Bernal (1)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 SRICO

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 mu m thin film of lithium niobate obtained by smart-cut technology. The photonic crystal, of area 4x0.8 mu m2, 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.

Domaines: Optique / photonique

H. Lu, B. Sadani, N. Courjal, G. Ulliac, N. Smith, et al.. Enhanced electro-optical lithium niobate photonic crystal wire waveguide on a smart-cut thin film. Optics Express, 2012, 20, pp.2974-2981. ⟨10.1364/OE.20.002974⟩. ⟨hal-00708074⟩