Quasi-Distributed Refractive Index Sensing by Stimulated Brillouin Scattering in Tapered Optical Fibers

被引：13

作者：

Minardo, Aldo ^{[1
]}

Zeni, Luigi ^{[1
]}

Bernini, Romeo ^{[2
]}

Catalano, Ester ^{[1
]}

Vallifuoco, Raffaele ^{[1
]}

机构：

[1] Univ Campania Luigi Vanvitelli, Dept Engn, I-81100 Aversa, Italy

[2] CNR, IREA CNR, I-80124 Naples, Italy

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2022年 / 40卷 / 08期

关键词：

Optical fibers; Refractive index; Optical fiber sensors; Optical fiber amplifiers; Optical variables control; Optical refraction; Acoustics; Refractive index measurements; stimulated Brillouin scattering; SINGLE-MODE FIBER; RAYLEIGH BACKSCATTERING; SPATIAL-RESOLUTION; SENSOR;

D O I：

10.1109/JLT.2022.3140553

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 that multiple tapers in optical fibers allow for quasi-distributed refractive index sensing via a high spatial resolution Brillouin Optical Frequency-Domain Analysis (BOFDA) configuration. We first characterize, theoretically and experimentally, the variation of the Brillouin frequency shift (BFS) with the diameter of the tapered fiber. Then, we characterize the dependence of the BFS from the outer refractive index in an optical fiber taper with a waist diameter of 10 mu m. Finally, we show that more tapers can be realized along the same fiber, in order to provide multi-point refractive index sensing.

引用

页码：2619 / 2624

页数：6

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