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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

Journal Article · · Scientific Reports
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  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)

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.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Organization:
USDOE
OSTI ID:
1480844
Journal Information:
Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 76 works
Citation information provided by
Web of Science

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Cited By (8)

Distributed Optical Fiber Sensors Based on Optical Frequency Domain Reflectometry: A review journal April 2018
Analysis of Residual Stress in Electrical Penetration Assembly Based on a Fiber Bragg Grating Sensor journal December 2018
Distributed optical fiber sensing: Review and perspective journal September 2019
Fiber nanogratings induced by femtosecond pulse laser direct writing for in-line polarizer journal January 2019
High Temperature High Sensitivity Multipoint Sensing System Based on Three Cascade Mach–Zehnder Interferometers journal August 2018
Rh/Ce 0.25 Zr 0.75 O 2 Catalyst for Steam Reforming of Propane at Low Temperature journal February 2019
The ROGUE: a novel, noise-generated random grating journal January 2019
Fiber Bragg Grating (FBG) Sensors in a High-Scattering Optical Fiber Doped with MgO Nanoparticles for Polarization-Dependent Temperature Sensing journal August 2019

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