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Proceedings Paper

Heterodyne Interferometric Temperature Sensor Using a Transverse Zeeman Laser and a Polarization Maintaining Fiber
Author(s): S. Kawata; T. Shigeoka; T. Okamoto; S. Minami
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Paper Abstract

A new fiber-optic temperature sesnor using a polarization maintaining fiber and a transverse Zeeman laser based on heterodyne interferometry has been developed. The temperature variation is detected by coupling two orthogonal linear polirization components of a laser beam, each differently phase-modulated during transmitting a birefringent single-mode polarization maintaining fiber. A transverse He-Ne Zeeman laser was developed to achieve heterodyning demodulation of the phase-shift caused by the temperature of the fiber. Experimental result demonstrates that this sensor has the temperature resolution of 0.0032°C with a very wide dynamic range. Besides, this fiber sensor has the advantages of simple construction and ruggedness against pressure turbulence.

Paper Details

Date Published: 3 January 1986
PDF: 5 pages
Proc. SPIE 0566, Fiber Optic and Laser Sensors III, (3 January 1986); doi: 10.1117/12.949805
Show Author Affiliations
S. Kawata, Osaka University (Japan)
T. Shigeoka, Osaka University (Japan)
T. Okamoto, Osaka University (Japan)
S. Minami, Osaka University (Japan)


Published in SPIE Proceedings Vol. 0566:
Fiber Optic and Laser Sensors III
Emery L. Moore; O. Glenn Ramer, Editor(s)

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