Intersubband transitions in InGaAs/AlAs coupleddouble quantum wellstructures for multi-wavelength all-optical switching
- 30 April 1998
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 34 (9) , 913-915
- https://doi.org/10.1049/el:19980605
Abstract
A coupled double quantum well (C-DQW) structure enabling ultrafast, multi-wavelength, all-optical modulation using intersubband transitions, is proposed. It has been shown from the calculation of absorption spectrum and relaxation characteristics that an InGaAs/AlAs C-DQW structure is desirable for application to all-optical switches for multi-wavelength operation at near-infrared wavelengths down to 1.5 µm.Keywords
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