WAVELENGTH -TUNABLE SELECTIVE OPTOELECTRONIC FILTER
First Claim
1. A wavelength tunable selective optoelectronic filter comprising a resonant cavity formed between two partial reflectors, each constituted by a stack of layers that are transparent at the wavelength used, together with means for applying an electric field to the terminals of the reflectors for the purpose of wavelength tuning the filter, wherein the resonant cavity is constituted by a disk of solid material that is transparent at said wavelength and that has a high refractive index, forming a waveguide between the reflectors, and wherein a first one of the reflectors is movable or deformable at least in part and is separated from the disk forming the resonant cavity by a plate of air.
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Accused Products
Abstract
A selective and wavelength-tunable optoelectronic filter comprising a resonant cavity placed between two partial reflectors (10, 12) such as Bragg mirrors, the resonant cavity being formed by a disk (16) of solid material having a high refractive index that constitutes a waveguide between the two partial reflectors (10, 12). The filter presents excellent selectivity.
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Citations
14 Claims
- 1. A wavelength tunable selective optoelectronic filter comprising a resonant cavity formed between two partial reflectors, each constituted by a stack of layers that are transparent at the wavelength used, together with means for applying an electric field to the terminals of the reflectors for the purpose of wavelength tuning the filter, wherein the resonant cavity is constituted by a disk of solid material that is transparent at said wavelength and that has a high refractive index, forming a waveguide between the reflectors, and wherein a first one of the reflectors is movable or deformable at least in part and is separated from the disk forming the resonant cavity by a plate of air.
Specification