Fiber optic magnetic field and current sensor using                    magneto-birefringence of dense ferrofluid thin films

Yingtian Pan; Xiande Liu; Congwu Du; Zaiguang Li

doi:10.1117/12.50052

1 August 1991 Fiber-optic magnetic field and current sensor using magneto-birefringence of dense ferrofluid thin films

Yingtian Pan, Xiande Liu, Congwu Du, Zaiguang Li

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50052
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

Abstract

Based on the strong magnetically induced birefringence and the magneto-optical absorption characteristics of dense ferrofluid thin films, this paper deals with research of their applications for magnetic field and electrical current sensing, using fiber optics. Preliminary experiments show the sensitivity of the system for magnetic field measurement (delta) H is better than 0.1 Oe, and for current measurement (delta) I < 1.2 A with a minimum detectable current threshold 6.5 A, which shows a promising potential for practical applications.

Citation Download Citation

Yingtian Pan, Xiande Liu, Congwu Du, and Zaiguang Li "Fiber-optic magnetic field and current sensor using magneto-birefringence of dense ferrofluid thin films", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50052

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