Polarimetric parameter measurement systems and methods for measuring a plurality of parameters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 17, 1992
Grant Date -
N/A
app pub date -
Sep 9, 1991
filing date -
Sep 9, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A systems for measuring the value of a plurality of parameters includes an optical fiber having a core that conducts coherent light along two orthogonal polarization axes at different velocities, e.g., an elliptical core, a light source for launching linearly polarized coherent light into such fiber to propagate therein as multimodes, a light splitter to divide the light that emerges from the optical fiber into a plurality of light portions, a mode stripper to remove the second order mode of light from the first light portion, a first polarizer to polarize such first light portion after it exits the mode stripper, a first photodetector to convert the polarized first light portion into a first electric signal, second polarizer to polarize a second light portion, a second photodetector to convert the polarized second light portion into a second electric signal, a signal processor to convert the first and second electric signals into a pair of analog voltages, and meters or the like to display such voltages as parameter values, e.g., strain and temperature. The systems may include a third polarizer and third photodetector to process a third light portion for a third parameter measurement, e.g., pressure. Parameter value measurement methods using the new systems are disclosed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully