Abstract
Dielectric interference filters incorporating an epitaxial anti-reflector structure and a concept for an all-optical reflection modulator are introduced. They are suitable for two-dimensional digital optical signal processing in an AlGaAs system employing molecular beam epitaxy. The reflection modulator concept uses dynamic band filling in multiquantum wells to obtain a bleachable absorption type optical non-linearity and promises more than 80% modulation depth. The numerical investigations are carried through with the help of two equivalent mathematical approaches which are explained in detail. Calculated results show satisfying agreement with experiments.
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