Technique for realizing attenuators for optical fibers with attenuating fiber
First Claim
1. 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.
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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.
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6 Claims
- 1. 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.
Specification