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Title: Fiber optic vibration sensor

Abstract

A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity.

Inventors:
 [1];  [2];  [1]
  1. Harriman, TN
  2. Lenoir City, TN
Issue Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
869702
Patent Number(s):
5381492
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fiber; optic; vibration; sensor; utilizes; single; mode; optical; fibers; supported; housing; fixedly; secured; providing; reference; signal; free; span; length; subject; vibrational; displacement; respect; indicative; measurement; perturbation; damping; tailoring; responsive; selected; levels; provided; altering; diameter; immersing; portion; sensing; liquid; viscosity; reference signal; optical fibers; fiber optic; optical fiber; single mode; signal indicative; mode optical; selected level; vibration sensor; vibration sensing; sensor utilizes; optic vibration; fibers supported; fixedly secured; /385/73/250/356/

Citation Formats

Dooley, Joseph B, Muhs, Jeffrey D, and Tobin, Kenneth W. Fiber optic vibration sensor. United States: N. p., 1995. Web.
Dooley, Joseph B, Muhs, Jeffrey D, & Tobin, Kenneth W. Fiber optic vibration sensor. United States.
Dooley, Joseph B, Muhs, Jeffrey D, and Tobin, Kenneth W. Sun . "Fiber optic vibration sensor". United States. https://www.osti.gov/servlets/purl/869702.
@article{osti_869702,
title = {Fiber optic vibration sensor},
author = {Dooley, Joseph B and Muhs, Jeffrey D and Tobin, Kenneth W},
abstractNote = {A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

Patent:

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