Proceedings of the 2nd International Forum on Management, Education and Information Technology Application (IFMEITA 2017)

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The Distributed OTDR Measuring System with UWFBGs based on Correlation Degree Spectrum

Authors
Rong Zhou, Qi Zhang
Corresponding Author
Rong Zhou
Available Online February 2018.
DOI
10.2991/ifmeita-17.2018.94How to use a DOI?
Keywords
UWFBGs, Correlation degree spectrum, CW noise, micro-strain, distributed Algorithm
Abstract

The distributed OTDR measuring system based on correlation degree spectrum of UWFBGs is proposed. The traditional OTDR system uses a white light source to reduce the noise signal induced by the interference from multiple reflections between UWFBGs (reflectivity of each to be 0.1%), in addition we used the optical pulse with high extinction ratio (>40dB) to reduce the noise floor of OTDR trace, so that the large number (330) of the FBGs can be detected at the end of 850m due to the low noise floor. The spectrums of 330FBGs have been characterized with a high-precision tunable filter at the receiver end. By calculating the correlation degree of adjacent spectrum we improved SNR to 35dB. The wavelength shift accuracy is 3.2pm. The accuracy of measured temperature and strain are respectively 3.2and 0.32øC.

Copyright
© 2018, 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/).

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Volume Title
Proceedings of the 2nd International Forum on Management, Education and Information Technology Application (IFMEITA 2017)
Series
Advances in Social Science, Education and Humanities Research
Publication Date
February 2018
ISBN
10.2991/ifmeita-17.2018.94
ISSN
2352-5398
DOI
10.2991/ifmeita-17.2018.94How to use a DOI?
Copyright
© 2018, 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

risenwbib
TY  - CONF
AU  - Rong Zhou
AU  - Qi Zhang
PY  - 2018/02
DA  - 2018/02
TI  - The Distributed OTDR Measuring System with UWFBGs based on Correlation Degree Spectrum
BT  - Proceedings of the 2nd International Forum on Management, Education and Information Technology Application (IFMEITA 2017)
PB  - Atlantis Press
SP  - 542
EP  - 549
SN  - 2352-5398
UR  - https://doi.org/10.2991/ifmeita-17.2018.94
DO  - 10.2991/ifmeita-17.2018.94
ID  - Zhou2018/02
ER  -