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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 7 — Apr. 1, 2010
  • pp: 1034–1036

Compact fiber-optic vector inclinometer

Li-Yang Shao and Jacques Albert  »View Author Affiliations


Optics Letters, Vol. 35, Issue 7, pp. 1034-1036 (2010)
http://dx.doi.org/10.1364/OL.35.001034


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Abstract

What we believe to be a novel fiber-optical inclinometer based on a dual-path core-to-cladding mode coupling mechanism is demonstrated. Both the amplitude and tilt direction of bends about a 2-mm-long flexure joint in an optical fiber can be determined. The sensor head consists of a nonadiabatic abrupt taper cascaded with a weakly tilted fiber Bragg grating. Measured bend angles of up to 12° are demonstrated, as well as a method to increase the sensitivity for bend angles smaller than 4°.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 7, 2010
Revised Manuscript: February 4, 2010
Manuscript Accepted: February 19, 2010
Published: March 31, 2010

Citation
Li-Yang Shao and Jacques Albert, "Compact fiber-optic vector inclinometer," Opt. Lett. 35, 1034-1036 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-7-1034


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