Fiber-optic voltage sensor using fiber gyro technology

The technique of non-reciprocal optical phase modulation known from fiber gyroscopes is adapted to interrogate a polarimetric optical voltage sensor. The piezoelectric deformation of a transducer by an applied ac voltage is transmitted to a birefringent fiber resulting in a periodic phase shift of t...

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Bibliographic Details
Published in:Procedia engineering 2010, Vol.5, p.1091-1094
Main Authors: Bohnert, K., Wildermuth, S., Frank, A., Brändle, H.
Format: Article
Language:English
Subjects:
Optical fiber sensors
Polarimetric sensors
Voltage sensors
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Summary:The technique of non-reciprocal optical phase modulation known from fiber gyroscopes is adapted to interrogate a polarimetric optical voltage sensor. The piezoelectric deformation of a transducer by an applied ac voltage is transmitted to a birefringent fiber resulting in a periodic phase shift of the two orthogonal polarizations of the fundamental fiber mode. A modulator at the detector end of the sensor introduces a nonreciprocal phase modulation of the light waves. The voltage is recovered from the first and second harmonics of the modulator frequency and side bands in the detected signal.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2010.09.300