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

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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