Interrogator for a plurality of sensor fiber optic gratings
AssigneeUS Seismic 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; and at least one amplifier associated with each optical receiver. The interrogator also includes, alternatively, a driver/modulator for the optical source providing on/off pulses; an analog integrator following the at least one amplifier; or a mechanism compensating for masking of one sensor fiber optic grating by another.
Claims9
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;
- and
- a driver/modulator for the optical source providing on/off pulses.
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;
- and
- an analog integrator following the at least one amplifier.
Dependencies are inferred from the claim text.