Technique for realizing attenuators for optical fibres with attenuating fibre
AssigneeOptotec S.P. A.
InventorsLucio Duca, Giuseppe Manfredda
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Abstract
The attenuator for optical fibers with attenuating fiber according to the present invention comprises an optical fiber having a profile of reflective index with partially depressed cladding, of a length equal to the one of the whole attenuator, drugged with chemical substances like ions of transition metals and elements of rare earth, for creating a uniform spectral attenuation in the field of wavelengths between 1260 nm to 1650 nm.
Claims6
A compact optical attenuator, characterized in the use of an optical fibre of a length equal to the one of the whole attenuator, drugged with chemical substances like ions of transition metals and elements of rare earth, for creating a spectral attenuation sufficiently uniform in the field of wavelengths from 1260 nm to 1650 nm.
An optical attenuator with a cord provided with connectors, characterized in that it contains an attenuated optical fibre according to the preceding claims, for the whole length thereof.
Dependencies are inferred from the claim text.