Modelling of an intersubband quantum confined Stark effect in Ge quantum wells for mid-infrared photonics
Journal article published in 2022 by
A. Barzaghi 
,
V. Falcone ,
S. Calcaterra,
D. Marris-Morini ,
M. Virgilio,
J. Frigerio
,
V. Falcone ,
S. Calcaterra,
D. Marris-Morini ,
M. Virgilio,
J. Frigerio
This paper is made freely available by the publisher.
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Abstract
In this work we theoretically investigate quantum confined Stark effect of intersubband transitions in asymmetric Ge/SiGe quantum wells for intensity modulation in the mid-infrared. Our calculations show that extinction ratios up to 1 dB and modulation speeds of several tens of GHz could be obtained in 100 µm long waveguides.