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Proceedings Paper

Magnet-sensitive optical fiber and its application in current sensor system
Author(s): Tong Yu; Qin Geng Li; Rongsheng Chen; Jin-Li Yan
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Paper Abstract

Terbium-doped optical fiber has a high Verdet constant and is called a magnet-sensitive fiber. It is of importance for a variety of applications, including magnetic field sensors, current sensors, and fiber-type isolators. In this paper, the authors describe magnet-sensitive optical fiber fabrication, magneto-optic coefficient measurement, and its application in current sensor systems. Experimental results show that the Verdet constant of magnet-sensitive fiber containing high rare-earth content (approximately 4000 parts in 106) is 2.7 times as high as that of ordinary silica-based fiber. When tested in current sensor systems, it gives similar performance observed in ultralow birefringent fiber.

Paper Details

Date Published: 1 August 1991
PDF: 3 pages
Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50036
Show Author Affiliations
Tong Yu, Beijing Glass Research Institute (China)
Qin Geng Li, Beijing Glass Research Institute (China)
Rongsheng Chen, Beijing Glass Research Institute (China)
Jin-Li Yan, Beijing Glass Research Institute (China)


Published in SPIE Proceedings Vol. 1572:
International Conference on Optical Fibre Sensors in China OFS(C) '91

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