Demodulation System of the FBG Reflectance Spectrum Based on Optical Low Coherence Reflectometry
Authors
L.Y. Zhang, X.Y. Shen, J. Sun, J.C. Hu, Y. Han
Corresponding Author
L.Y. Zhang
Available Online July 2015.
- DOI
- 10.2991/eame-15.2015.76How to use a DOI?
- Keywords
- FBG; OLCR; demodulation; Bragg wavelength; repeatability
- Abstract
The key to the complex sensor detection(such as the non homogenous strain detection) of the fiber Bragg grating(FBG) is the demodulation of FBG reflectance spectrum. This paper designs the demodulation system which is based on the optical low coherence reflectometry(OLCR) princple. The system is mainly composed of the improved OLCR set-up and the LabVIEW demodulation program. The experimental results show that the demodulation system can effectively reduce the noise and amplify the interference signal, quickly demodulate the FBG reflectance spectrum and exactly find the Bragg wavelength after the zero padding and Gauss curve fitting, especially the repeatability can reach to 4pm.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - L.Y. Zhang AU - X.Y. Shen AU - J. Sun AU - J.C. Hu AU - Y. Han PY - 2015/07 DA - 2015/07 TI - Demodulation System of the FBG Reflectance Spectrum Based on Optical Low Coherence Reflectometry BT - Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering PB - Atlantis Press SP - 279 EP - 282 SN - 2352-5401 UR - https://doi.org/10.2991/eame-15.2015.76 DO - 10.2991/eame-15.2015.76 ID - Zhang2015/07 ER -