Fiber optic geophysical sensors

Patent · Mon Dec 31 23:00:00 EST 1990

OSTI ID:867746

Homuth, Emil F ^[1]

---

1. Los Alamos, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5001337
• OSTI ID: 867746
• Country of Publication: United States
• Language: English

Related Subjects

/250/356/
contact
earthquakes
embodiment
environment
event
fiber
fiber optic
geophysical
geophysical event
interferometer
interferometers
laser
laser light
lasers
light
monitoring
optic
optic geophysical
passed
provides
reference
sensor
sensors
separate
single
single tunable
tunable
tunable laser
tunable lasers
weighing