Interferometric detector with fibre-optic sensor

Details Interferometric detector with fibre-optic sensor Interferometric detector with fibre-optic sensor

1983-08-01

1987-03-24

McGraw, Vincent P.

Optics: measuring and testing

By particle light scattering

With photocell detection

250227, 356351, G01B 902

Patent

active

046521291

ABSTRACT:
The detector comprises an electro-optical section for the signal analysis, a transmission fibre-optic, a fibre-optic coupling of high immunity to environmental noise, and a fibre-optic sensor terminating in a reflecting element. It can be provided in either homodyne or heterodyne version (phase or frequency modulation). This latter version has the advantage of detecting phase modulations exceeding 2.pi. radians. Both the versions have the advantage of enabling measurements to be made which are not influenced by environmental disturbances affecting the transmission fibre-optic.

REFERENCES:
patent: 4420260 (1983-12-01), Martinelli

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