Materials, Photonic Devices, and Sensors

Curvature and temperature sensor based on bulge-taper structures interferometer with embedded fiber Bragg grating

[+] Author Affiliations
Cheng Zhang, Junfa Zhao, Changyun Miao, Hongqiang Li, Hua Bai, Meiling Zhang

Tianjin Polytechnic University, School of Electronics and Information Engineering, Tianjin 300387, China

Opt. Eng. 54(8), 087104 (Aug 20, 2015). doi:10.1117/1.OE.54.8.087104
History: Received June 15, 2015; Accepted July 27, 2015
Text Size: A A A

Abstract.  A sensor head consisting of an all single-mode fiber (SMF) in-line Mach–Zehnder interferometer (MZI) with an embedded fiber Bragg grating (FBG) is proposed and experimentally demonstrated for simultaneous measurement of curvature and temperature. It is fabricated by cascading two bulge-taper fusion structures in a section of SMF including an FBG. The MZI is sensitive to fiber bending and ambient temperature with a sensitivity of 16.59nm/m1 in the range of 1.05 to 4.05m1 and 58pm/°C in the range of 30°C to 100°C, respectively. However, the FBG is only sensitive to the latter with a sensitivity of 13pm/°C. Simultaneous measurement of curvature and temperature is obtained and the cross-sensitivity issue can be solved. The experimental results show that the average relative error of the curvature is 0.38%, which is about 18 times better than that without temperature compensating. The average error of temperature is only 0.21°C.

Figures in this Article
© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Cheng Zhang ; Junfa Zhao ; Changyun Miao ; Hongqiang Li ; Hua Bai, et al.
"Curvature and temperature sensor based on bulge-taper structures interferometer with embedded fiber Bragg grating", Opt. Eng. 54(8), 087104 (Aug 20, 2015). ; http://dx.doi.org/10.1117/1.OE.54.8.087104


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.