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

Optical fibers

Sensors

Lead

Single mode fibers

Interferometers

Demodulation

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