Continuously tunable fibre attenuator operating in the wavelength range near 1.5 {mu}m

A fibre attenuator is fabricated for the telecommunication wavelength range near 1.5 {mu}m 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 operati...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 34; no. 9
Main Authors Baum, Ol'ga I, Mishakov, Gennadii V, Sokolov, Viktor I, Varlamova, Nina V, Zapadinskii, Boris I
Format Journal Article
LanguageEnglish
Published United States 30.09.2004
Subjects
ATTENUATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELECTROMAGNETIC RADIATION
ELEMENTS
FIBERS
FLUORINE
HALOGENS
MINERALS
NONMETALS
OPTICAL FIBERS
OPTICAL PROPERTIES
OXIDE MINERALS
PHYSICAL PROPERTIES
POLARIZATION
POLISHING
POLYMERS
RADIATIONS
REFLECTION
REFRACTIVE INDEX
SILICA
SURFACE FINISHING
SURFACES
TUNING
VARIATIONS
VISIBLE RADIATION
WAVELENGTHS
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Summary:A fibre attenuator is fabricated for the telecommunication wavelength range near 1.5 {mu}m 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. (fibre optics)
ISSN:1063-7818
DOI:10.1070/QE2004V034N09ABEH002804