Three Operation Modes for Tb/s All-Optical Switching With Intersubband Transitions in InGaAs/AlAs/AlAsSb Quantum Wells
| Autor: | Ping Ma, Jérôme Faist, Heinz Jäckel, Peter Kaspar, M. Beck, R. Kappeler, Yuriy Fedoryshyn, Jonathan F. Holzman |
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| Rok vydání: | 2012 |
| Předmět: |
Fabrication
Materials science business.industry Physics::Optics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Optical switch Signal Atomic and Molecular Physics and Optics Gallium arsenide chemistry.chemical_compound Optics chemistry Optoelectronics Electrical and Electronic Engineering business Optical filter Absorption (electromagnetic radiation) Indium gallium arsenide Quantum well |
| Zdroj: | IEEE Journal of Quantum Electronics. 48:885-890 |
| ISSN: | 1558-1713 0018-9197 |
| DOI: | 10.1109/jqe.2012.2193558 |
| Popis: | We report on ultra-fast intersubband transitions in strained coupled double InGaAs/AlAs/AlAsSb quantum wells in terms of modeling, fabrication, and characterization of the structures. Our experimental results demonstrate the capability of the studied structures to perform Tb/s all-optical switching in the telecommunication wavelength range employing exclusively intersubband transitions. The coupled double quantum wells embedded into a ridge-waveguide can be explored as an inline single-wavelength all-optical switch at 1430 or 1730 nm, with response times of 400 fs and 2 ps, respectively. These structures can also be operated in a dual-wavelength mode, which allows a straightforward separation of signal pulses at 1730 nm from control pulses at 1430 nm by relaxed spectral filtering at the output of the device. |
| Databáze: | OpenAIRE |
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