An OTDR and gratings assisted multifunctional fiber sensing system

Xiangchuan Wang, Zhijun Yan, Feng Wang, Ji Hua, Chengbo Mou, Zhongyuan Sun, Xuping Zhang, Lin Zhang

Research output: Contribution to journalArticle

Abstract

We report a distributed multifunctional fiber sensing network based on weak-fiber Bragg gratings (WFBGs) and long period fiber grating (LPG) assisted OTDR system. The WFBGs are applied for temperature, strain, and vibration monitoring at key position, and the LPG is used as a linear filter in the system to convert the wavelength shift of WFBGs caused by environmental change into the power change. The simulation results show that it is possible to integrate more than 4472 WFBGs in the system when the reflectivity of WFBGs is less than {10}^{-5}. Besides, the back-Rayleigh scattering along the whole fiber can also be detected which makes distributed bend sensing possible. As an experimental demonstration, we have used three WFBGs UV-inscribed with 50-m interval at the end of a 2.6-km long fiber, which part was subjected for temperature, strain, and vibration sensing, respectively. The ratio of the intensity of output and input light is used for temperature and strain sensing, and the results show strain and temperature sensitivities are 4.2 \times {10}^{-4}{/\mu \varepsilon } and 5.9 \times {10}^{-3}{{/ {^{\circ }}\textrm {C}}} , respectively. Detection of multiple vibrations and single vibration with the broad frequency band up to 500 Hz are also achieved. In addition, distributed bend sensing which could be simultaneously realized in this system has been proposed.

Original languageEnglish
Pages (from-to)4660-4666
Number of pages7
JournalIEEE Sensors Journal
Volume15
Issue number8
Early online date28 Apr 2015
DOIs
Publication statusPublished - Aug 2015

Fingerprint

Fiber Bragg gratings
gratings
fibers
Fibers
Bragg gratings
vibration
Temperature
Rayleigh scattering
Diffraction gratings
Frequency bands
Demonstrations
linear filters
temperature
Wavelength
Monitoring
intervals
reflectance

Bibliographical note

© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • optical fiber gratings
  • optical fiber measurements
  • optical time domain reflectometry
  • vibration measurement

Cite this

Wang, Xiangchuan ; Yan, Zhijun ; Wang, Feng ; Hua, Ji ; Mou, Chengbo ; Sun, Zhongyuan ; Zhang, Xuping ; Zhang, Lin. / An OTDR and gratings assisted multifunctional fiber sensing system. In: IEEE Sensors Journal. 2015 ; Vol. 15, No. 8. pp. 4660-4666.
@article{b84aa29ea3614c97b864083b89d19456,
title = "An OTDR and gratings assisted multifunctional fiber sensing system",
abstract = "We report a distributed multifunctional fiber sensing network based on weak-fiber Bragg gratings (WFBGs) and long period fiber grating (LPG) assisted OTDR system. The WFBGs are applied for temperature, strain, and vibration monitoring at key position, and the LPG is used as a linear filter in the system to convert the wavelength shift of WFBGs caused by environmental change into the power change. The simulation results show that it is possible to integrate more than 4472 WFBGs in the system when the reflectivity of WFBGs is less than {10}^{-5}. Besides, the back-Rayleigh scattering along the whole fiber can also be detected which makes distributed bend sensing possible. As an experimental demonstration, we have used three WFBGs UV-inscribed with 50-m interval at the end of a 2.6-km long fiber, which part was subjected for temperature, strain, and vibration sensing, respectively. The ratio of the intensity of output and input light is used for temperature and strain sensing, and the results show strain and temperature sensitivities are 4.2 \times {10}^{-4}{/\mu \varepsilon } and 5.9 \times {10}^{-3}{{/ {^{\circ }}\textrm {C}}} , respectively. Detection of multiple vibrations and single vibration with the broad frequency band up to 500 Hz are also achieved. In addition, distributed bend sensing which could be simultaneously realized in this system has been proposed.",
keywords = "optical fiber gratings, optical fiber measurements, optical time domain reflectometry, vibration measurement",
author = "Xiangchuan Wang and Zhijun Yan and Feng Wang and Ji Hua and Chengbo Mou and Zhongyuan Sun and Xuping Zhang and Lin Zhang",
note = "{\circledC} 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",
year = "2015",
month = "8",
doi = "10.1109/JSEN.2015.2427194",
language = "English",
volume = "15",
pages = "4660--4666",
journal = "IEEE Sensors Journal",
issn = "1530-437X",
publisher = "IEEE",
number = "8",

}

Wang, X, Yan, Z, Wang, F, Hua, J, Mou, C, Sun, Z, Zhang, X & Zhang, L 2015, 'An OTDR and gratings assisted multifunctional fiber sensing system', IEEE Sensors Journal, vol. 15, no. 8, pp. 4660-4666. https://doi.org/10.1109/JSEN.2015.2427194

An OTDR and gratings assisted multifunctional fiber sensing system. / Wang, Xiangchuan; Yan, Zhijun; Wang, Feng; Hua, Ji; Mou, Chengbo; Sun, Zhongyuan; Zhang, Xuping; Zhang, Lin.

In: IEEE Sensors Journal, Vol. 15, No. 8, 08.2015, p. 4660-4666.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An OTDR and gratings assisted multifunctional fiber sensing system

AU - Wang, Xiangchuan

AU - Yan, Zhijun

AU - Wang, Feng

AU - Hua, Ji

AU - Mou, Chengbo

AU - Sun, Zhongyuan

AU - Zhang, Xuping

AU - Zhang, Lin

N1 - © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2015/8

Y1 - 2015/8

N2 - We report a distributed multifunctional fiber sensing network based on weak-fiber Bragg gratings (WFBGs) and long period fiber grating (LPG) assisted OTDR system. The WFBGs are applied for temperature, strain, and vibration monitoring at key position, and the LPG is used as a linear filter in the system to convert the wavelength shift of WFBGs caused by environmental change into the power change. The simulation results show that it is possible to integrate more than 4472 WFBGs in the system when the reflectivity of WFBGs is less than {10}^{-5}. Besides, the back-Rayleigh scattering along the whole fiber can also be detected which makes distributed bend sensing possible. As an experimental demonstration, we have used three WFBGs UV-inscribed with 50-m interval at the end of a 2.6-km long fiber, which part was subjected for temperature, strain, and vibration sensing, respectively. The ratio of the intensity of output and input light is used for temperature and strain sensing, and the results show strain and temperature sensitivities are 4.2 \times {10}^{-4}{/\mu \varepsilon } and 5.9 \times {10}^{-3}{{/ {^{\circ }}\textrm {C}}} , respectively. Detection of multiple vibrations and single vibration with the broad frequency band up to 500 Hz are also achieved. In addition, distributed bend sensing which could be simultaneously realized in this system has been proposed.

AB - We report a distributed multifunctional fiber sensing network based on weak-fiber Bragg gratings (WFBGs) and long period fiber grating (LPG) assisted OTDR system. The WFBGs are applied for temperature, strain, and vibration monitoring at key position, and the LPG is used as a linear filter in the system to convert the wavelength shift of WFBGs caused by environmental change into the power change. The simulation results show that it is possible to integrate more than 4472 WFBGs in the system when the reflectivity of WFBGs is less than {10}^{-5}. Besides, the back-Rayleigh scattering along the whole fiber can also be detected which makes distributed bend sensing possible. As an experimental demonstration, we have used three WFBGs UV-inscribed with 50-m interval at the end of a 2.6-km long fiber, which part was subjected for temperature, strain, and vibration sensing, respectively. The ratio of the intensity of output and input light is used for temperature and strain sensing, and the results show strain and temperature sensitivities are 4.2 \times {10}^{-4}{/\mu \varepsilon } and 5.9 \times {10}^{-3}{{/ {^{\circ }}\textrm {C}}} , respectively. Detection of multiple vibrations and single vibration with the broad frequency band up to 500 Hz are also achieved. In addition, distributed bend sensing which could be simultaneously realized in this system has been proposed.

KW - optical fiber gratings

KW - optical fiber measurements

KW - optical time domain reflectometry

KW - vibration measurement

UR - http://www.scopus.com/inward/record.url?scp=84934296764&partnerID=8YFLogxK

U2 - 10.1109/JSEN.2015.2427194

DO - 10.1109/JSEN.2015.2427194

M3 - Article

AN - SCOPUS:84934296764

VL - 15

SP - 4660

EP - 4666

JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

SN - 1530-437X

IS - 8

ER -