Magneto-optical fiber sensor based on magnetic fluid
Peng Zu(Nanyang Technological University), Chi Chiu Chan(Nanyang Technological University), Wen Siang Lew(Nanyang Technological University), Yongxing Jin(China Jiliang University), Yifan Zhang(Nanyang Technological University), Hwi Fen Liew(Nanyang Technological University), Li Han Chen(Nanyang Technological University), Wei Chang Wong(Nanyang Technological University), Xinyong Dong(China Jiliang University)
Cited by 179Open Access
Abstract
A novel magnetic field fiber sensor based on magnetic fluid is proposed. The sensor is configured as a Sagnac interferometer structure with a magnetic fluid film and a section of polarization maintaining fiber inserted into the fiber loop to produce a sinusoidal interference spectrum for measurement. The output interference spectrum is shifted as the change of the applied magnetic field strength with a sensitivity of 16.7 pm/Oe and a resolution of 0.60 Oe. The output optical power is varied with the change of the applied magnetic field strength with a sensitivity of 0.3998 dB/Oe.
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