High-resolution long-reach distributed Brillouin sensing based on combined time-domain and correlation-domain analysis
نویسندگان
چکیده
منابع مشابه
High-resolution long-reach distributed Brillouin sensing based on combined time-domain and correlation-domain analysis.
A new scheme for distributed Brillouin sensing of strain and temperature in optical fibers is proposed, analyzed and demonstrated experimentally. The technique combines between time-domain and correlation-domain analysis. Both Brillouin pump and signal waves are repeatedly co-modulated by a relatively short, high-rate phase sequence, which introduces Brillouin interactions in a large number of ...
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ABSTRACT We propose and experimentally demonstrate the highest-resolution BOTDA system ever reported using Brillouin dynamic grating in a polarization-maintaining fiber (PMF). Acoustic waves containing the information of local Brillouin frequency are generated by a long pump pulse in one polarization, and read out by a short probe pulse in the orthogonal polarization at a clearly distinct optic...
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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 ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2014
ISSN: 1094-4087
DOI: 10.1364/oe.22.006453