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US 7,994,469 B2Granted
Interrogator for a plurality of sensor fiber optic gratings having at least one filter for converting changes in peak reflection wavelength to changes in intensity
AssigneeUS Sensor Systems, Inc.
InventorsEric Lee Goldner, Gerald Robert Baker
Life of this patent
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Abstract
An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; at least one amplifier associated with each optical receiver; and an active closed-loop circuit following the at least one amplifier to provide bias voltage stabilization.
Claims20
An interrogator for a plurality of sensor fiber optic gratings comprising:
- a broadband optical source;
- at least one beam splitter directing output of the optical source to the sensor fiber optic gratings;
- at least one linear filter for converting changes in peak reflection wavelength to changes in intensity;
- at least one optical receiver;
- at least one amplifier associated with each optical receiver;
- an active closed-loop circuit following said at least one amplifier to provide bias voltage stabilization.
3 more elements
Dependencies are inferred from the claim text.