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Proceedings Article

Magnetic field sensitivity of depolarized fiber optic gyros

[+] Author Affiliations
James N. Blake

Honeywell, Inc. (USA)

Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, 81 (February 1, 1991); doi:10.1117/12.24731
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From Conference Volume 1367

  • Fiber Optic and Laser Sensors VIII
  • Ramon P. DePaula; Eric Udd
  • San Jose, CA | March 03, 1991

abstract

Results are presented of experimental measurements and an analysis of the magnetic field sensitivity of several types of depolarized fiber-optic gyros. It was found that depolarized gyros of the Bohm et al. (1981) and Fredricks and Ulrich (1984) configuration (having one depolarizer in the loop) can be highly sensitive to magnetic fields, while depolarized gyros incorporating Pavlath and Shaw concept (i.e., having unpolarized light enter and exit the loop) are insensitive to magnetic fields. It is shown that a gyro having all the advantages of both designs can be obtained by incorporating two depolarizers, one between the polarizer and the loop coupler and the other within the loop. A scheme of this type of fiber gyro is presented.

© (1991) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

James N. Blake
"Magnetic field sensitivity of depolarized fiber optic gyros", Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, 81 (February 1, 1991); doi:10.1117/12.24731; http://dx.doi.org/10.1117/12.24731


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