Fast Brillouin optical time domain analysis for dynamic sensing | Zendy

Yair Peled | Zendy; Avi Motil | Zendy; Moshe Tur | Zendy

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Fast Brillouin optical time domain analysis for dynamic sensing

Author(s) -

Yair Peled,

Avi Motil,

Moshe Tur

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.008584

Subject(s) - optics , brillouin scattering , brillouin zone , time domain , optical fiber , granularity , signal (programming language) , frequency domain , fiber optic sensor , materials science , signal processing , computer science , physics , digital signal processing , computer hardware , computer vision , programming language , operating system

A new technique for the fast implementation of Brillouin Optical Time Domain Analysis (BOTDA) is proposed and demonstrated, carrying the classical BOTDA method to the dynamic sensing domain. By using a digital signal generator which enables fast switching among 100 scanning frequencies, we demonstrate a truly distributed and dynamic measurement of a 100 m long fiber with a sampling rate of ~10 kHz, limited only by the fiber length and the frequency granularity. With 10 averages the standard deviation of the measured strain was ~5 µε.

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