Performance analysis of the Fiber Bragg grating Interrogation system based on an arrayed waveguide grating

P. Niewczas, A.J. Willshire, L. Dziuda, J.R. McDonald

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

In this paper we analyze performance of the Fiber Bragg Grating (FBG) Interrogation System based on an Arrayed Waveguide Grating (AWG) device. The spectrum of light reflected from the FBG sensor is analyzed using an AWG which acts as a coarse spectrometer. Using measurement points from the AWG channels, the original spectrum of the sensing element is reconstructed by a means of curve fitting. The measurement system is modeled in LabView environment, which allows to modify the FBG and AWG parameters and to simulate the measurement process. This, in turn, allows quantifying the measurement errors resulting from the nonlinearity of the particular FBG/AWG configuration, and allows optimizing the system design for the particular measurement errors permitted. In addition to the simulations of the proposed measurement system, we provide details of the laboratory evaluation.
Original languageEnglish
Pages (from-to)1192-1196
Number of pages4
JournalIEEE Transactions on Instrumentation and Measurement
Volume53
Issue number4
Publication statusPublished - May 2004

Keywords

  • Bragg gratings
  • arrayed waveguide gratings
  • measurement errors
  • measurement systems
  • performance evaluation
  • sensors

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