Enhanced multiplexing capacity of low-coherence reflectometric sensors with a loop topology

Libo Yuan, Wei Jin, Li Min Zhou, Y. L. Hoo, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


A novel scheme for enhancing the multiplexing capacity of low-coherence reflectometric sensors is demonstrated. The scheme is based on connecting the sensing elements in serial in a loop configuration, allowing each of the sensors within the array being interrogated twice from opposite directions. The bi-directional interrogation enhances the multiplexing capacity in terms of maximum sensor number. The bi-interrogation scheme would also allow normal operation of the sensor array even when one end or somewhere of the transmission fiber were broken, improving the reliability of the sensing system for large-scale structural monitoring.
Original languageEnglish
Pages (from-to)1157-1159
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
Publication statusPublished - 1 Aug 2002


  • Fiber-optic sensors
  • Low-coherence reflectometry
  • Quasidistributed sensors
  • Strain sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this