| Autor: |
Gubin, Vladimir P., Isaev, Victor A., Morshnev, Sergey K., Sazonov, Aleksandr I., Starostin, Nikolay I., Chamorovsky, Yury K., Oussov, Aleksey I. |
| Zdroj: |
Quantum Electronics; April 2006, Vol. 36 Issue: 3 p287-291, 5p |
| Abstrakt: |
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: |
Supplemental Index |
| Externí odkaz: |
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