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  • Vol. 33, Iss. 9 — May. 1, 2008
  • pp: 1004–1006

Temperature-independent tilted fiber grating vibration sensor based on cladding-core recoupling

Tuan Guo, Alexei Ivanov, Chengkun Chen, and Jacques Albert  »View Author Affiliations


Optics Letters, Vol. 33, Issue 9, pp. 1004-1006 (2008)
http://dx.doi.org/10.1364/OL.33.001004


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Abstract

A novel structure in which a short optical fiber stub containing a weakly tilted Bragg grating is spliced to another slightly offset fiber. The total power reflected from this structure is independent of temperature and occurs in two well-defined wavelength bands, only one of which reflects a different amount of power as the fiber stub bends or vibrates. The smart sensing structure presents an extremely high sensitivity for microbending, and its frequency response has been tested to higher than 2 kHz so far in temperature-immune vibration measurements via cost-effective power detection.

© 2008 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 28, 2008
Revised Manuscript: March 26, 2008
Manuscript Accepted: March 27, 2008
Published: April 30, 2008

Citation
Tuan Guo, Alexei Ivanov, Chengkun Chen, and Jacques Albert, "Temperature-independent tilted fiber grating vibration sensor based on cladding-core recoupling," Opt. Lett. 33, 1004-1006 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-9-1004


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