Frequency-scanning BOTDA with ultimately fast acquisition speed

Ido Sovran, Avi Motil, Moshe Tur

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

A polarization-independent fast and distributed frequency-scanning Brillouin optical time-domain analysis (BOTDA) technique is presented, capable of acquiring the full Brillouin gain spectrum at a speed limited only by the fiber length and the employed frequency scanning granularity. For a 145-m long fiber and 71 interrogating frequencies, the ultimate measurement speed of 9700 [full-fiber-Brillouin-gain-spectra]/second is demonstrated, covering a strain dynamic range of 4200 με with an accuracy of ±10 με. Dynamic measurements with a spatial resolution of 10 cm are also demonstrated by combining the technique with the double pulse pair BOTDA method.

Original languageEnglish
Article number7088586
Pages (from-to)1426-1429
Number of pages4
JournalIEEE Photonics Technology Letters
Volume27
Issue number13
DOIs
StatePublished - 1 Jul 2015

Funding

FundersFunder number
Israel Science Foundation1380/12

    Keywords

    • Brillouin scattering
    • Optical fiber sensors
    • nonlinear optics

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