Fiber-optic sensor having near-field and remote-field signals

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

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324 96, H01J 516

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active

051966956

ABSTRACT:
In a fiber-optic sensor for alternating electric fields or voltages, the interference in a bimodal fiber (3) is measured passively. To this end, the mutually phase-shifted near-field and remote-field signals are separated by optical means (15) at the exit end of the bimodal fiber (3), and passed to appropriate detectors (17a, b, c), and the electrical signals created are evaluated by electronic means (18).

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