Magnetic Field Measurements Based on Terfenol Coated Photonic Crystal Fibers

被引：38

作者：

Quintero, Sully M. M. ^{[1
]}

Martelli, Cicero

Braga, Arthur M. B. ^{[1
]}

Valente, Luiz C. G. ^{[1
]}

Kato, Carla C. ^{[1
]}

机构：

[1] Pontifical Catholic Univ Rio de Janeiro, BR-22453900 Rio De Janeiro, RJ, Brazil

来源：

SENSORS | 2011年 / 11卷 / 12期

关键词：

photonic crystal fiber; high birefringence; magnetic field sensing; air-silica structured fiber; microstructured fiber; SENSORS; PHASE;

D O I：

10.3390/s111211103

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A magnetic field sensor based on the integration of a high birefringence photonic crystal fiber and a composite material made of Terfenol particles and an epoxy resin is proposed. An in-fiber modal interferometer is assembled by evenly exciting both eigenemodes of the HiBi fiber. Changes in the cavity length as well as the effective refractive index are induced by exposing the sensor head to magnetic fields. The magnetic field sensor has a sensitivity of 0.006 (nm/mT) over a range from 0 to 300 mT with a resolution about +/- 1 mT. A fiber Bragg grating magnetic field sensor is also fabricated and employed to characterize the response of Terfenol composite to the magnetic field.

引用

页码：11103 / 11111

页数：9

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