Recent progress in bi-directional interrogation techniques for enhancing multiplexing capability of fiber optic white light interferometric sensors

Libo Yuan, Limin Zhou, Wei Jin

Research output: Journal article publicationConference articleAcademic researchpeer-review


In smart structures applications where fiber sensors are embedded within structural materials, multiple lead in/out fibers are preferred for redundancy and improving reliability. The use of only one lead/out fiber is not optimal because the breakage of fiber at one location due to for example local structural damage would cause the failure of the whole sensing system. The multiplexing and networking techniques suitable for such applications have attracted considerable research recently. In this paper, we summaries the results of our recent investigation on the bi-directional interrogation techniques (BDIT) for white light interferometric sensor arrays.

Original languageEnglish
Pages (from-to)156-167
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 9 Sep 2002
EventAdvanced Sensor Systems and Applications 2002 - Shanghai, China
Duration: 14 Oct 200218 Oct 2002


  • Optical fiber sensors
  • Quasi-distributed sensing system
  • Smart structures
  • White light interferometry
  • Fiber optics
  • Multiplexing
  • Sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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