Interrogation of a dual-fibre-Bragg-grating sensor using an arrayed waveguide grating

D.C. Robertson, P. Niewczas, J.R. McDonald

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In this paper, we consider the possibility of improving the accuracy of a solid-state fiber Bragg grating (FBG) interrogation system by using two, instead of one, FBGs inscribed on the same location of the fiber, with a small difference in the peak wavelength that each reflects. Signal processing can be applied to the outputs of the photodetectors that are connected to an arrayed waveguide grating to provide a linear response from the sensor. We demonstrate here that this method reduces errors when compared to the setup employing a single FBG with the same bandwidth as the dual sensor.
LanguageEnglish
Pages2641-2645
Number of pages5
JournalIEEE Transactions on Instrumentation and Measurement
Volume56
Issue number6
DOIs
Publication statusPublished - Dec 2007

Fingerprint

Arrayed waveguide gratings
interrogation
Fiber Bragg gratings
Bragg gratings
gratings
waveguides
fibers
sensors
Sensors
Photodetectors
Signal processing
Bandwidth
Wavelength
photometers
Fibers
signal processing
solid state
bandwidth
output
wavelengths

Keywords

  • arrayed waveguide gratings
  • fiber Bragg gratings
  • sensor interrogation
  • strain sensors

Cite this

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Interrogation of a dual-fibre-Bragg-grating sensor using an arrayed waveguide grating. / Robertson, D.C.; Niewczas, P.; McDonald, J.R.

In: IEEE Transactions on Instrumentation and Measurement, Vol. 56, No. 6, 12.2007, p. 2641-2645.

Research output: Contribution to journalArticle

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