Centimeter-range spatial resolution distributed sensing by BOFDA

被引：1

作者：

Bernini, Romeo ^{[1
]}

Minardo, Aldo ^{[2
]}

Zeni, Luigi ^{[2
]}

机构：

[1] CNR, Ist Rilevamento Elettromagnet Ambiente, Via Diocleziano 328, I-80124 Naples, Italy

[2] Univ Naples 2, Dept Informat Engn, I-81031 Aversa, Italy

来源：

21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2011年 / 7753卷

关键词：

Optical fiber sensors; stimulated Brillouin scattering; MODE OPTICAL-FIBER; BRILLOUIN-SCATTERING; SPECTRUM;

D O I：

10.1117/12.886060

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We demonstrate both numerically and experimentally the possibility to bring the spatial resolution of Brillouin optical frequency-domain analysis (BOFDA) distributed sensors in the cm-range. The numerical analysis is aimed to understand the effects of acoustic wave modulation on the accuracy of BOFDA systems when operating with submeter spatial resolution. We demonstrate that these effects lead to an error in strain/temperature estimation, which depends on the amount of strain/temperature change, and on the peak searching algorithm applied to the acquired spectra. Experimental measurements of BOFDA traces up to 3.5 GHz, equivalent to 3-cm spatial resolution, are presented and discussed.

引用

页数：4

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