Dynamical strain sensing via discrete reflectors interrogated by optical frequency domain reflectometry

Oren Y. Sagiv*, Dror Arbel, Yinon Katz, Yossi Grotas, Avishay Eyal

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Dynamical sensing of strain via discrete reflectors interrogated by optical frequency domain reflectometry is described and demonstrated experimentally. The benefits of using discrete reflectors rather than Rayleigh back-scattering for dynamical measurements are elaborated. The method is tested in a sensor arm made from four discrete fiber segments of different lengths and in a fiber with an array of ten fiber Bragg gratings with the same center wavelength and ∼0.5% reflection. Dynamical sensing of oscillatory strain at 100 Hz, with absolute stretching amplitude <100nm, at ∼1km is demonstrated.

Original languageEnglish
Title of host publication22nd International Conference on Optical Fiber Sensors
DOIs
StatePublished - 2012
Event22nd International Conference on Optical Fiber Sensors - Beijing, China
Duration: 15 Oct 201219 Oct 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8421
ISSN (Print)0277-786X

Conference

Conference22nd International Conference on Optical Fiber Sensors
Country/TerritoryChina
CityBeijing
Period15/10/1219/10/12

Keywords

  • Acoustical Sensing
  • Distributed Sensors
  • Dynamical Strain Sensing
  • Fiber Bragg Gratings
  • Optical Frequency Domain Reflectometry

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