Terbium doped strontium cerate enabled long period fiber gratings for high temperature sensing of hydrogen

X. T. Wei, Tao Wei, Hai Xiao, Jerry Lin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper reports on a novel optical fiber based sensor for hydrogen detection at high temperatures (>600 °C). The optical sensor consists of a perovskite-type ceramic, SrCe0.95Tb0.05O 3-δ, as the sensing material, which is coated on the cladding layer of long period fiber gratings. Upon exposure to hydrogen, the reduction of Ce4+ to Ce3+ on the surface of SrCe0.95Tb 0.05O3-δ particle causes decrease in its refractive index. As a result, the resonance wavelength of long period fiber gratings shifts to a higher value. The rate of the shift is dependent on the hydrogen partial pressure and can be used as the sensing signal. The high temperature optical H2 sensor exhibits high sensitivity for H2 detection at a partial pressure of 0.005 atm, and a short response time. The sensor is reversible as exposing the sensor to air oxidizes Ce3+ to Ce4+.

Original languageEnglish (US)
Pages (from-to)214-219
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume152
Issue number2
DOIs
StatePublished - Mar 1 2011

Fingerprint

Terbium
Strontium
terbium
strontium
Hydrogen
gratings
fibers
Fibers
Sensors
optical measuring instruments
hydrogen
Partial pressure
partial pressure
sensors
Temperature
shift
Optical sensors
Perovskite
Optical fibers
Refractive index

Keywords

  • Hydrogen
  • Long period fiber gratings
  • Optical sensor
  • Perovskite ceramics
  • Refractive index

ASJC Scopus subject areas

  • Instrumentation
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Terbium doped strontium cerate enabled long period fiber gratings for high temperature sensing of hydrogen. / Wei, X. T.; Wei, Tao; Xiao, Hai; Lin, Jerry.

In: Sensors and Actuators, B: Chemical, Vol. 152, No. 2, 01.03.2011, p. 214-219.

Research output: Contribution to journalArticle

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