A novel magnetic field fiber sensor by using magnetic fluid in Sagnac loop

Peng Zu; Chi Chiu Chan; Yongxing Jin; Yifan Zhang; Xinyong Dong

doi:10.1117/12.884704

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17 May 2011 A novel magnetic field fiber sensor by using magnetic fluid in Sagnac loop

Peng Zu, Chi Chiu Chan, Yongxing Jin, Yifan Zhang, Xinyong Dong

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Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77531G (2011) https://doi.org/10.1117/12.884704
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A novel magnetic field sensor by using magnetic fluid film in Sagnac loop is presented. The magnetic fluid introduces controllable birefringence under external magnetic field inside the Sagnac loop to produce sinusoidal interference and the corresponding transmission spectrum shifts with the change of external field strength. Sensitivity of 11.4 pm/Oe and resolution of 0.88 Oe are achieved in the case of this proposed scheme.

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Peng Zu, Chi Chiu Chan, Yongxing Jin, Yifan Zhang, and Xinyong Dong "A novel magnetic field fiber sensor by using magnetic fluid in Sagnac loop", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531G (17 May 2011); https://doi.org/10.1117/12.884704

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