title: Polarization dependence of quantum-confined Stark effect in Ge/SiGe quantum well planar waveguides.
abstract: We report room-temperature quantum-confined Stark effect in Ge/SiGe multiple quantum wells (MQWs) with light propagating parallel to the plane of the Ge/SiGe MQWs for applications in integrated photonics. Planar waveguides embedded in a p-i-n diode are fabricated in order to investigate the absorption spectra at different reverse bias voltages from optical transmission measurements for both TE and TM polarizations. Polarization dependence of the absorption spectra of the Ge/SiGe MQWs is clearly observed. The planar waveguides exhibit a high extinction ratio and low insertion loss over a wide spectral range for TE polarization.
authors: Institut d'Electronique Fondamentale, Universite´ Paris-Sud, CNRS UMR 8622, Batiment 220, 91405 Orsay Cedex, France.
authors: Papichaya
authors: P
authors: Chaisakul
authors: Delphine
authors: D
authors: Marris-Morini
authors: Giovanni
authors: G
authors: Isella
authors: Daniel
authors: D
authors: Chrastina
authors: Xavier
authors: X
authors: Le Roux
authors: Samson
authors: S
authors: Edmond
authors: Jean-René
authors: JR
authors: Coudevylle
authors: Eric
authors: E
authors: Cassan
authors: Laurent
authors: L
authors: Vivien