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Title: Distributed Optical Fiber Sensors with Ultrafast Laser Enhanced Rayleigh Backscattering Profiles for Real-Time Monitoring of Solid Oxide Fuel Cell Operations

Abstract

This paper reports a technique to enhance the magnitude and high-temperature stability of Rayleigh back-scattering signals in silica fibers for distributed sensing applications. With femtosecond laser radiation, more than 40-dB enhancement of Rayleigh backscattering signal was generated in silica fibers using 300-nJ laser pulses at 250 kHz repetition rate. The laser-induced Rayleigh scattering defects were found to be stable from the room temperature to 800 °C in hydrogen gas. The Rayleigh scatter at high temperatures was correlated to the formation and modification of nanogratings in the fiber core. Using optical fibers with enhanced Rayleigh backscattering profiles as distributed temperature sensors, we demonstrated real-time monitoring of solid oxide fuel cell (SOFC) operations with 5-mm spatial resolution at 800 °C. Information gathered by these fiber sensor tools can be used to verify simulation results or operated in a process-control system to improve the operational efficiency and longevity of SOFC-based energy generation systems.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [2];  [3];  [1]
  1. Univ. of Pittsburgh, PA (United States). Dept. of Electrical and Computer Engineering
  2. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
  3. Corning Incorporated, Corning, NY (United States)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1480844
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
[ Journal Volume: 7; Journal Issue: 1]; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 97 MATHEMATICS AND COMPUTING

Citation Formats

Yan, Aidong, Huang, Sheng, Li, Shuo, Chen, Rongzhang, Ohodnicki, Paul, Buric, Michael, Lee, Shiwoo, Li, Ming-Jun, and Chen, Kevin P. Distributed Optical Fiber Sensors with Ultrafast Laser Enhanced Rayleigh Backscattering Profiles for Real-Time Monitoring of Solid Oxide Fuel Cell Operations. United States: N. p., 2017. Web. doi:10.1038/s41598-017-09934-3.
Yan, Aidong, Huang, Sheng, Li, Shuo, Chen, Rongzhang, Ohodnicki, Paul, Buric, Michael, Lee, Shiwoo, Li, Ming-Jun, & Chen, Kevin P. Distributed Optical Fiber Sensors with Ultrafast Laser Enhanced Rayleigh Backscattering Profiles for Real-Time Monitoring of Solid Oxide Fuel Cell Operations. United States. doi:10.1038/s41598-017-09934-3.
Yan, Aidong, Huang, Sheng, Li, Shuo, Chen, Rongzhang, Ohodnicki, Paul, Buric, Michael, Lee, Shiwoo, Li, Ming-Jun, and Chen, Kevin P. Thu . "Distributed Optical Fiber Sensors with Ultrafast Laser Enhanced Rayleigh Backscattering Profiles for Real-Time Monitoring of Solid Oxide Fuel Cell Operations". United States. doi:10.1038/s41598-017-09934-3. https://www.osti.gov/servlets/purl/1480844.
@article{osti_1480844,
title = {Distributed Optical Fiber Sensors with Ultrafast Laser Enhanced Rayleigh Backscattering Profiles for Real-Time Monitoring of Solid Oxide Fuel Cell Operations},
author = {Yan, Aidong and Huang, Sheng and Li, Shuo and Chen, Rongzhang and Ohodnicki, Paul and Buric, Michael and Lee, Shiwoo and Li, Ming-Jun and Chen, Kevin P.},
abstractNote = {This paper reports a technique to enhance the magnitude and high-temperature stability of Rayleigh back-scattering signals in silica fibers for distributed sensing applications. With femtosecond laser radiation, more than 40-dB enhancement of Rayleigh backscattering signal was generated in silica fibers using 300-nJ laser pulses at 250 kHz repetition rate. The laser-induced Rayleigh scattering defects were found to be stable from the room temperature to 800 °C in hydrogen gas. The Rayleigh scatter at high temperatures was correlated to the formation and modification of nanogratings in the fiber core. Using optical fibers with enhanced Rayleigh backscattering profiles as distributed temperature sensors, we demonstrated real-time monitoring of solid oxide fuel cell (SOFC) operations with 5-mm spatial resolution at 800 °C. Information gathered by these fiber sensor tools can be used to verify simulation results or operated in a process-control system to improve the operational efficiency and longevity of SOFC-based energy generation systems.},
doi = {10.1038/s41598-017-09934-3},
journal = {Scientific Reports},
number = [1],
volume = [7],
place = {United States},
year = {2017},
month = {8}
}

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