Distributed Sensing at Centimeter-Scale Spatial Resolution by BOFDA: Measurements and Signal Processing

被引：106

作者：

Bernini, Romeo ^{[1
]}

Minardo, Aldo ^{[2
]}

Zeni, Luigi ^{[1
,2
]}

机构：

[1] CNR, Ist Rilevamento Elettromagnet Ambiente, I-32880124 Naples, Italy

[2] Univ Naples 2, Dipartimento Ingn Informaz, I-81031 Aversa, Italy

来源：

IEEE PHOTONICS JOURNAL | 2012年 / 4卷 / 01期

关键词：

Optical fiber sensors; strain measurement; temperature measurement; FREQUENCY-DOMAIN ANALYSIS; MODE OPTICAL-FIBER; WIDTH PAIR BOTDA; BRILLOUIN-SCATTERING; SPECTRAL-RESOLUTION; PULSE; PUMP;

D O I：

10.1109/JPHOT.2011.2179024

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we demonstrate high spatial (approximate to 3 cm) and spectral (approximate to 30 MHz) resolution Brillouin sensing by use of Brillouin optical frequency-domain analysis (BOFDA) and signal processing. An iterative method is employed to correct the acquired data from spurious effects associated to acoustic wave modulation and relevant in the high spatial resolution regime. Experimental tests demonstrate that the proposed algorithm allows to reconstruct the Brillouin shift profile with the full spatial resolution allowed by the system bandwidth.

引用

页码：48 / 56

页数：9

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