Capacity and capability enhancements of FBG sensor system by utilizing intensity and WDM detection technique

Chien Hung Yeh, Yuan Hong Zhuang, Ning Tsai, Chi-Wai Chow

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

In this paper, we demonstrate a multipoint fiber Bragg grating (FBG)-based sensor system by using intensity and wavelength-division-multiplexing (I-WDM) technique to enhance the sensing capacity and capability. In the proposed multipoint sensor system, a three output port optical splitter with different output ratios of 50%, 35% and 15% is proposed to connect each intensity coding FBG sensor for strain and temperature sensing simultaneously. Different output ratios of connected ports can produce different intensity-coding for I-WDM application. Nine FBGs with different Bragg wavelengths are employed for demonstration. The proposed FBG sensor system not only can sense the strain and temperature simultaneously, but also can increase the capacity and capability.

Original languageEnglish
Article number035026
JournalSmart Materials and Structures
Volume26
Issue number3
DOIs
StatePublished - 7 Feb 2017

Keywords

  • erbium-doped fiber laser (EDFL)
  • fiber bragg grating (FBG)
  • fiber sensor

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