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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 27 — Sep. 20, 2008
  • pp: 4841–4848

Simultaneous measurement of multiparameters using a Sagnac interferometer with polarization maintaining side-hole fiber

O. Frazão, S. O. Silva, J. M. Baptista, J. L. Santos, G. Statkiewicz-Barabach, W. Urbanczyk, and J. Wojcik  »View Author Affiliations


Applied Optics, Vol. 47, Issue 27, pp. 4841-4848 (2008)
http://dx.doi.org/10.1364/AO.47.004841


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Abstract

A Sagnac interferometer with a section of a polarization maintaining side-hole fiber for multiparameter measurement is proposed. The sensor was experimentally demonstrated to be sensitive to torsion, temperature, and longitudinal strain, simultaneously. The birefringence in the investigated side-hole fiber is induced simultaneously by the elliptical shape of a germanium-doped core and by field overlap with the air holes surrounding the core. The latter effect is purely geometrical and causes high chromatic dispersion of the group birefringence in the long wavelength range, which results in a different period of spectral interference fringes. A different wavelength response is obtained for each interference fringe peak when the fiber is subjected to torsion, temperature, or longitudinal strain. A matrix equation for simultaneous measurement of the three parameters—torsion, temperature, and longitudinal strain—is also proposed.

© 2008 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(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

History
Original Manuscript: July 9, 2008
Revised Manuscript: August 14, 2008
Manuscript Accepted: August 20, 2008
Published: September 11, 2008

Citation
O. Frazão, S. O. Silva, J. M. Baptista, J. L. Santos, G. Statkiewicz-Barabach, W. Urbanczyk, and J. Wojcik, "Simultaneous measurement of multiparameters using a Sagnac interferometer with polarization maintaining side-hole fiber," Appl. Opt. 47, 4841-4848 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-27-4841

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