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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 2121–2124

High-sensitivity strain sensor based on in-fiber improved Fabry–Perot interferometer

Shen Liu, Yiping Wang, Changrui Liao, Guanjun Wang, Zhengyong Li, Qiao Wang, Jiangtao Zhou, Kaiming Yang, Xiaoyong Zhong, Jing Zhao, and Jian Tang  »View Author Affiliations

Optics Letters, Vol. 39, Issue 7, pp. 2121-2124 (2014)

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We demonstrated a high-sensitivity strain sensor based on an in-fiber Fabry–Perot interferometer (FPI) with an air cavity, which was created by splicing together two sections of standard single-mode fibers. The sensitivity of this strain sensor was enhanced to 6.0pm/με by improving the cavity length of the FPI by means of repeating arc discharges for reshaping the air cavity. Moreover, such a strain sensor has a very low temperature sensitivity of 1.1pm/°C, which reduces the cross sensitivity between tensile strain and temperature.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: January 21, 2014
Revised Manuscript: February 27, 2014
Manuscript Accepted: February 27, 2014
Published: March 31, 2014

Shen Liu, Yiping Wang, Changrui Liao, Guanjun Wang, Zhengyong Li, Qiao Wang, Jiangtao Zhou, Kaiming Yang, Xiaoyong Zhong, Jing Zhao, and Jian Tang, "High-sensitivity strain sensor based on in-fiber improved Fabry–Perot interferometer," Opt. Lett. 39, 2121-2124 (2014)

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