Magnetic Field Sensing Based on Bi-Tapered Optical Fibers Using Spectral Phase Analysis

被引：7

作者：

Herrera-Piad, Luis A. ^{[1
]}

Haus, Joseph W. ^{[2
]}

Jauregui-Vazquez, Daniel ^{[1
]}

Sierra-Hernandez, Juan M. ^{[1
]}

Estudillo-Ayala, Julian M. ^{[1
]}

Lopez-Dieguez, Yanelis ^{[1
]}

Rojas-Laguna, Roberto ^{[1
]}

机构：

[1] Univ Guanajuato, Dept Ingn Elect, Div Ingn, Salamanca Valle Santiago Km 3-5 1-8, Salamanca 36885, Mexico

[2] Univ Dayton, Dept Elect Opt & Photon, Dayton, OH 45469 USA

来源：

SENSORS | 2017年 / 17卷 / 10期

关键词：

tapered optical fibers; magnetic fiber optic sensor; optical signal processing; PHOTONIC CRYSTAL FIBER; FABRY-PEROT-INTERFEROMETER; SENSOR; FLUID; LASER;

D O I：

10.3390/s17102393

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A compact, magnetic field sensor system based on a short, bi-tapered optical fiber (BTOF) span lying on a magnetic tape was designed, fabricated, and characterized. We monitored the transmission spectrum from a broadband light source, which displayed a strong interference signal. After data collection, we applied a phase analysis of the interference optical spectrum. We here report the results on two fabricated, BTOFs with different interference spectrum characteristics; we analyzed the signal based on the interference between a high-order modal component and the core fiber mode. The sensor exhibited a linear response for magnetic field increments, and we achieved a phase sensitivity of around 0.28 rad/mT. The sensing setup presented remote sensing operation and low-cost transducer magnetic material.

引用

页数：10

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