Magneto-optical fiber sensor based on magnetic fluid |
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Authors: | Zu Peng Chan Chi Chiu Lew Wen Siang Jin Yongxing Zhang Yifan Liew Hwi Fen Chen Li Han Wong Wei Chang Dong Xinyong |
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Institution: | School of Chemical & Biomedical Engineering, Nanyang Technological University, Singapore. |
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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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