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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 15 — Aug. 1, 2013
  • pp: 2927–2929

High-birefringence fiber loop mirror sensor using a WDM fused fiber coupler

D. J. Passos, Manuel J. Marques, and Orlando Frazão  »View Author Affiliations

Optics Letters, Vol. 38, Issue 15, pp. 2927-2929 (2013)

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An intensity-based highly birefringent (Hi-Bi) fiber loop mirror (FLM) sensor is proposed which uses a wavelength-division multiplexing (WDM) fiber coupler. The effect of integrating the WDM coupler in a FLM configuration is first studied. A section of Hi-Bi (bow-tie) fiber of length 0.26 m is then placed in the fiber loop, making the spectral response of the device simultaneously dependent on the Hi-Bi fiber section and WDM coupler characteristics. When strain is applied to the sensing head, the spectral signal is modulated in amplitude, in contrast with the conventional Hi-Bi FLM sensors in which there are wavelength shifts. The sensor was characterized in strain and a sensitivity of (2.2±0.4)×103με1 for a range of 300 με was attained. The self-referenced character of the sensor is noted.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 28, 2013
Revised Manuscript: July 16, 2013
Manuscript Accepted: July 17, 2013
Published: August 1, 2013

D. J. Passos, Manuel J. Marques, and Orlando Frazão, "High-birefringence fiber loop mirror sensor using a WDM fused fiber coupler," Opt. Lett. 38, 2927-2929 (2013)

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