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Title: Fiber optic geophysical sensors

A fiber optic geophysical sensor 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.
Inventors:
 [1]
  1. (Los Alamos, NM)
Issue Date:
OSTI Identifier:
867746
Assignee:
United States of America as represented by United States (Washington, DC) LANL
Patent Number(s):
US 5001337
Contract Number:
W-7405-ENG-36
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
fiber; optic; geophysical; sensors; sensor; laser; light; passed; interferometer; contact; event; reference; environment; embodiment; single; tunable; provides; separate; lasers; interferometers; monitoring; earthquakes; weighing; tunable lasers; fiber optic; laser light; tunable laser; single tunable; optic geophysical; geophysical event; /250/356/