Strong electro-refractive effect in Ge/SiGe coupled quantum wells

Jacopo Frigerio (1) , Vladyslav Vakarin (2) , Papichaya Chaisakul (2) , Marcello Ferretto (1) , Daniel Chrastina (1) , Xavier Le Roux (2) , Laurent Vivien (2) , Giovanni Isella (1) , Delphine Marris-Morini (2)

1 POLIMI - Politecnico di Milano [Milan]
2 IEF - Institut d'électronique fondamentale

In this work we investigate the electro-refractive effect in Ge/SiGe coupled quantum wells. An effective index variation of 2.3 x 10-3 has been measured at 1.5 V bias in a planar waveguide, with an associated figure of merit V  L  of 0.046 Vcm.

Domaines: Optique / photonique

Jacopo Frigerio, Vladyslav Vakarin, Papichaya Chaisakul, Marcello Ferretto, Daniel Chrastina, et al.. Strong electro-refractive effect in Ge/SiGe coupled quantum wells. 12th International Conference on Group IV Photonics - GFP , Aug 2015, Vancouver, Canada. ⟨hal-01322131⟩