Continuously tunable fibre attenuator operating in the wavelength range near 1.5 μm
| Autor: | Boris I Zapadinskii, Nina V Varlamova, Olga I. Baum, Viktor I Sokolov, Gennadii V Mishakov |
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| Rok vydání: | 2004 |
| Předmět: |
Attenuator (electronics)
Total internal reflection Optical fiber Materials science Silica fiber business.industry Statistical and Nonlinear Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Subwavelength-diameter optical fibre Optics law Attenuation coefficient Electrical and Electronic Engineering business Refractive index Optical attenuator |
| Zdroj: | Quantum Electronics. 34:849-851 |
| ISSN: | 1468-4799 1063-7818 |
| Popis: | A fibre attenuator is fabricated for the telecommunication wavelength range near 1.5 μm in which a single-mode silica fibre with side polishing is used. The fibre surface is covered by a layer of fluorine-containing polymer with a large thermooptic coefficient. The principle of attenuator operation is based on a change in the conditions of total internal reflection for a guided mode in the polished region due to thermally induced variation in the refractive index of the fluoropolymer layer. The attenuator is insensitive to light polarisation, it has a continuously variable attenuation coefficient in the range 0.2–27 dB, and can be easily incorporated into fibreoptic links. |
| Databáze: | OpenAIRE |
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