Vibration insensitive optical fiber current sensor with a modified reciprocal reflection interferometer

Hermann Lin; Wuu Wen Lin; Mao-Hsiung Chen; Shih-Chu Huang

doi:10.1117/1.602224

1 October 1999 Vibration insensitive optical fiber current sensor with a modified reciprocal reflection interferometer

Hermann Lin, Wuu Wen Lin, Mao-Hsiung Chen, Shih-Chu Huang

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Optical Engineering, Vol. 38, Issue 10, (October 1999). https://doi.org/10.1117/1.602224

A modified reciprocal reflection interferometer (MRRI) is proposed for vibration insensitive optical fiber current sensors (OFCSs). The verifications of experiments are in good agreement with our theoretical analyses. A large vibrational perturbation applied to a segment of lead fiber to simulate the disturbance to the OFCS can be suppressed over 20 dB compared with a conventional reciprocal reflection interferometer (RRI). The noise floor of the OFCS with an MRRI under perturbations is about 1.36 Armsturns/Hz1/2 near the shot noise limit. A good linear demodulation result is obtained and the evaluation of the Verdet constant 1.1?rad/Arms turns approximates the literatural data measured in static environment.

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Hermann Lin, Wuu Wen Lin, Mao-Hsiung Chen, and Shih-Chu Huang "Vibration insensitive optical fiber current sensor with a modified reciprocal reflection interferometer," Optical Engineering 38(10), (1 October 1999). https://doi.org/10.1117/1.602224

Published: 1 October 1999

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