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 the InGaAs/AlAsSb C-DQW structure is desirable for applications in all-optical switches for multi-wavelength operation at near-infrared wavelengths down to 1.3 μm. The capability of ultrafast all-optical switching/wavelength conversion between 1.3 μm and 1.55 μm has also been shown
Published in:
Indium Phosphide and Related Materials, 1998 International Conference on
Date of Conference: 11-15 May 1998