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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 8 — Apr. 15, 2010
  • pp: 1284–1286

Compact optical path scanner and its application for decoding fiber-optic interferometers

Zhengying Li, Jianmin Gong, Bo Dong, Cheng Ma, Jiajun Wang, and Anbo Wang  »View Author Affiliations


Optics Letters, Vol. 35, Issue 8, pp. 1284-1286 (2010)
http://dx.doi.org/10.1364/OL.35.001284


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Abstract

This Letter describes a compact optical path scanner for decoding fiber-optic interferometers. The active component of the scanner is a segment of liquid sealed in a fused silica hollow fiber. When the volume of the liquid is changed by an attached thermoelectric cooler, one end facet of the liquid moves along the hollow fiber, and the optical path of the light reflected by the end facet is thus tuned, with a continuous tuning range of a few hundred micrometers. We used the optical path scanner for demodulating the optical path difference of a Fabry–Perot interferometric sensor, and the resulted decoding accuracy is 14 nm over a measurement range of 50 μ m . The compact optical path scanner has the advantages of compact size, high precision, flexible scanning range, low cost, insensitivity to vibration, and ease of fabrication.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 19, 2010
Manuscript Accepted: February 8, 2010
Published: April 15, 2010

Citation
Zhengying Li, Jianmin Gong, Bo Dong, Cheng Ma, Jiajun Wang, and Anbo Wang, "Compact optical path scanner and its application for decoding fiber-optic interferometers," Opt. Lett. 35, 1284-1286 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-8-1284


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