Fiber Bragg grating sensor interrogation system using a CCD side detection method with superimposed blazed gratings

K. Zhou*, A.G. Simpson, X. Chen, L. Zhang, I. Bennion

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We present, for the first time to our knowledge, experimental evidence showing that superimposed blazed fiber Bragg gratings may be fabricated and used to extend the dynamic range of a grating-based spectrometer. Blazed gratings of 4° and 8° were superimposed in germanosilicate fiber by ultraviolet inscription and used in conjunction with a coated charged-coupled device array to interrogate a wavelength-division-multiplexing sensor array. We show that the system can be used to monitor strain and temperature sensors simultaneously with an employable bandwidth which is extendedable to 70 nm.

Original languageEnglish
Pages (from-to)1549-1551
Number of pages3
JournalIEEE Photonics Technology Letters
Volume16
Issue number6
DOIs
Publication statusPublished - Jun 2004

Keywords

  • fiber gratings
  • optical coupling
  • optical fiber radiation effect
  • sensors
  • wavelength-division multiplexing (WDM)

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