Modelling of an intersubband quantum confined Stark effect in Ge quantum wells for mid-infrared photonics

Modelling of an intersubband quantum confined Stark effect in Ge quantum wells for mid-infrared photonics

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...

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Veröffentlicht in:Optics express 2022-12, Vol.30 (26), p.46710-46721
Hauptverfasser: Barzaghi, A, Falcone, V, Calcaterra, S, Marris-Morini, D, Virgilio, M, Frigerio, J
Format: Artikel
Sprache:eng
Schlagworte:
Optics
Physics
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Zusammenfassung: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.476735