Fiber optic geophysical sensors
Patent
·
OSTI ID:7027163
A fiber optic geophysical sensor is described in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects. 2 figures.
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- A; US 5001337
- Application Number:
- PPN: US 7-506741
- OSTI ID:
- 7027163
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440700* -- Geophysical & Meteorological Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
58 GEOSCIENCES
580000 -- Geosciences
DESIGN
DETECTION
EARTHQUAKES
ELECTROMAGNETIC RADIATION
FIBER OPTICS
INTERFEROMETERS
LASER RADIATION
MEASURING INSTRUMENTS
RADIATIONS
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC EVENTS
WEIGHT MEASUREMENT
47 OTHER INSTRUMENTATION
58 GEOSCIENCES
580000 -- Geosciences
DESIGN
DETECTION
EARTHQUAKES
ELECTROMAGNETIC RADIATION
FIBER OPTICS
INTERFEROMETERS
LASER RADIATION
MEASURING INSTRUMENTS
RADIATIONS
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC EVENTS
WEIGHT MEASUREMENT