Optoelectronic device with wavelength filtering by cavity coupling
Référence
84820-01
Mots-clés
Statut des brevets
French patent application FR0101520 filed on février 5th, 2001 entitled « Dispositif de filtrage en longueur d’onde accordable électriquement comportant deux cavités couplées »
Inventeurs
Pierre VIKTOROVITCH
Michel GARRIGUES
Jean-Louis LECLERCQ
Statut commercial
Research agreement, exclusive or non exclusive licenses
Laboratoire
Institut des nanotechnologies de Lyon, a CNRS laboratory (UMR 5270) in Lyon, France, http://inl.cnrs.fr/
Description
TECHNICAL DESCRIPTION
The invention concerns an optoelectronic device comprising first means defining a first thick resonant cavity having a multiple transmission resonant modes, second means defining a second thin resonant cavity having one transmission resonant mode, means for optically coupling the first and second means, and electrostatic means designed to apply to the second means an electric voltage selected to vary the thickness of the second cavity and the special position of its resonant mode, such that it coincides with one of the resonant modes of the first cavity.
BENEFITS
The invention describes a way to produce a second-order tuneable filter by coupling a long fixed cavity and a short tuneable cavity. It provides a way to control accurately the central frequency of a tunable filter over a WDM set of channels. The form factor of the filter is largely improved as compared to state of art single-order filters.
INDUSTRIAL APPLICATIONS
Highly selective tuneable filter for optical fibre communication.
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