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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 1680–1686

Simultaneous measurement of strain and temperature by employing fiber Mach-Zehnder interferometer

Jiangtao Zhou, Changrui Liao, Yiping Wang, Guolu Yin, Xiaoyong Zhong, Kaiming Yang, Bing Sun, Guanjun Wang, and Zhengyong Li  »View Author Affiliations


Optics Express, Vol. 22, Issue 2, pp. 1680-1686 (2014)
http://dx.doi.org/10.1364/OE.22.001680


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Abstract

We demonstrated a novel fiber in-line Mach-Zehnder interferometer (MZI) with a large fringe visibility of up to 17 dB, which was fabricated by misaligned splicing a short section of thin core fiber between two sections of standard single-mode fiber. Such a MZI could be used to realize simultaneous measurement of tensile strain and temperature. Tensile strain was measured with an ultrahigh sensitivity of −0.023 dB/μɛ via the intensity modulation of interference fringes, and temperature was measured with a high sensitivity of 51 pm/°C via the wavelength modulation of interference fringe. That is, the MZI-based sensor overcomes the cross-sensitivity problem between tensile strain and temperature by means of different demodulation methods. Moreover, this proposed sensor exhibits the advantages of low-cost, extremely simple structure, compact size (only about 10 mm), and good repeatability.

© 2014 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Sensors

History
Original Manuscript: December 4, 2013
Revised Manuscript: January 2, 2014
Manuscript Accepted: January 10, 2014
Published: January 16, 2014

Citation
Jiangtao Zhou, Changrui Liao, Yiping Wang, Guolu Yin, Xiaoyong Zhong, Kaiming Yang, Bing Sun, Guanjun Wang, and Zhengyong Li, "Simultaneous measurement of strain and temperature by employing fiber Mach-Zehnder interferometer," Opt. Express 22, 1680-1686 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-2-1680


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