Interferometric detector with fibre-optic sensor
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United States of America Patent
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Mar 24, 1987
Grant Date -
N/A
app pub date -
Aug 1, 1983
filing date -
Jul 28, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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