Bava, G.P. ; Debernardi, P.
(1990)
Performance evaluation of a MWQ all optical modulator.
In: Gallium Arsenide Applications Symposium. GAAS 1990, 19-20 April 1990, Rome, Italy.
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Abstract
Optically controlled Multiple Quantum Well (MWQ) modulators promise to be of great interest for all optical data processing. In this paper we analyze a device, based on a GaAs/AlAs MQW structure, whose principle of operation depends on the controlled excitonic absorption by means of free carrier generation. Such a device, experimentally tested in [1,2,3], is able to give a modulation depth close to one; its operation frequency is limited by carrier lifetime up to about some ten megahertz and it can be promising for high speed parallel processing. The numerical results show a good agreement with experimental data reported in [1],
Abstract