Use of Spun optical fibres in current sensors
| Autor: | Yury K Chamorovsky, S. K. Morshnev, V. A. Isaev, Nikolay I Starostin, A. I. Sazonov, Aleksey I Oussov, Vladimir P Gubin |
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| Rok vydání: | 2006 |
| Předmět: |
Physics
Birefringence Optical fiber business.industry Statistical and Nonlinear Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Subwavelength-diameter optical fibre symbols.namesake Interferometry Optics law Faraday effect symbols Astronomical interferometer Current sensor Electrical and Electronic Engineering Anisotropy business |
| Zdroj: | Quantum Electronics. 36:287-291 |
| ISSN: | 1468-4799 1063-7818 |
| Popis: | The polarisation properties of a Spun optical fibre are studied in connection with their applications in fibreoptic current sensors based on the Faraday effect. A model of this fibre is proposed which represents it as an anisotropic medium with the spiral structure of the fast and slow birefringence axes. A sensor is developed based on an all-fibre low-coherence linear interferometer with a threshold sensitivity of 70 mA Hz-1/2, a maximum measured current of 3000 A, and a scale-factor reproducibility of ±0.6%. It is found that for a given diameter of the fibre contour, the normalised sensitivity is independent of the fibre length. The experimental results confirm the theory. |
| Databáze: | OpenAIRE |
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