Remote speckle-based measurements of backward brillouin acoustic vibrations in optical fibers

Sagie Asraf; Benjamin Lengenfelder; Michael Schmidt; Zeev Zalevsky

doi:10.3390/app10020664

Remote speckle-based measurements of backward brillouin acoustic vibrations in optical fibers

Sagie Asraf, Benjamin Lengenfelder, Michael Schmidt, Zeev Zalevsky

Research output: Contribution to journal › Article › peer-review

Abstract

We propose a novel technique for measurements of Brillouin acoustic vibrations based on temporal tracking of back-reflected speckle patterns. The proposed method holds the potential to enhance some of the limiting factors in Brillouin frequency measurements while yielding increased spatial resolution and shorter scanning times of the inspected fiber. Experimental results show the capabilities of the proposed method are presented, using a two pump-waves configuration.

Original language	English
Article number	664
Journal	Applied Sciences (Switzerland)
Volume	10
Issue number	2
DOIs	https://doi.org/10.3390/app10020664
State	Published - 1 Jan 2020

Bibliographical note

Funding Information:
This research was funded by the Erlangen Graduate School in Advanced Optical Technologies (SAOT) by the German Research Foundation (DFG) in the framework of the German excellence initiative.

Publisher Copyright:
© 2020 by the authors.

Keywords

Brillouin sensing
Fiber sensors
Speckle analysis

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10.3390/app10020664

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Remote speckle-based measurements of backward brillouin acoustic vibrations in optical fibers

Abstract

Bibliographical note

Keywords

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