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International Journal of Optics
Volume 2013 (2013), Article ID 636987, 3 pages
Research Article

Development of Sandglass Shape FBG Sensor to Reduce Cross Sensitivity Effect

Xi’an University of Science and Technology, No. 58 Yan Ta Street, Xi’an, Shanxi 710054, China

Received 24 April 2013; Revised 22 May 2013; Accepted 31 May 2013

Academic Editor: Augusto Belendez

Copyright © 2013 Bo Zhang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Fiber Bragg grating (FBG) sensors have received considerable attention in applications of temperature, axial strain, and transverse pressure measurement. However, the cross-sensitivity of strain and temperature measurement is the key problem of FBG sensors. In this paper, a sandglass shape FBG is proposed to divide cross-sensitivity of temperature and transverse pressure. The principle and structure of sandglass FBG are introduced, and the experiment results show cross-sensitivity avoidable in the transverse pressure sensor.