The measurement of the electric current with an optical fiber sensor can be made insensitive to external vibrations that act on the leading fiber by using a circuit involving a mirrored Faraday rotator and a highly twisted low birefringence fiber. A description of the optical configuration as well as our first experimental results are presented. The circuit gives a passive compensation of the disturbances with a measured rejection of the order of 30 dB while maintaining the correct sensitivity to the measurement of the Faraday effect.

Vibration-insensitive fiberoptic current sensor

MARTINELLI, MARIO
1993-01-01

Abstract

The measurement of the electric current with an optical fiber sensor can be made insensitive to external vibrations that act on the leading fiber by using a circuit involving a mirrored Faraday rotator and a highly twisted low birefringence fiber. A description of the optical configuration as well as our first experimental results are presented. The circuit gives a passive compensation of the disturbances with a measured rejection of the order of 30 dB while maintaining the correct sensitivity to the measurement of the Faraday effect.
Fiber optics; TLC
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/657957
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