A grating-less in-fibre magnetometer realised in a polymer-MOF infiltrated using ferrofluid

被引：2
作者：
Candiani, A. [1 ,2 ]
Argyros, A. [3 ]
Lwin, R. [3 ]
Leon-Saval, S. G. [3 ]
Zito, G. [2 ]
Selleri, S. [2 ]
Pissadakis, S. [1 ]
机构：
[1] Fdn Res & Technol Hellas FORTH, Inst Elect Struct & Laser IESL, POB 1385, GR-71110 Iraklion, Greece
[2] Univ Parma, Dept Informat Engn DII, I-43124 Parma, Italy
[3] Univ Sydney, Sch Phys, Inst Photon & Opt Sci, Sydney, NSW, Australia
来源：
MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES | 2012年 / 8426卷
关键词：
Optical fiber sensors; Microstructured optical fibers; Magneto-optical systems; Ferrofluids; MAGNETIC-FIELD; SENSOR; LIGHT;
D O I：
10.1117/12.922700
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report a grating-less, in-fibre magnetometer realised in a polymethylmethacrylate (PMMA) microstructured optical fibre that has been infiltrated using a hydrocarbon oil based ferrofluid. The lossy magnetic fluid has been infiltrated by capillarity action into the microcapillaries of the fiber cladding, resulting in a generation of a short cut-off band located in the vicinity of 600nm. When the magnetic field is applied perpendicular to the fiber axis, the ferrofluid undergoes refractive index and scattering loss changes, modulating the transmission properties of the infiltrated microstructured fibre. Spectral measurements of the transmitted signal are reported for magnetic field changes up to 1300Gauss, revealing a strong decrease of the signal near its bandgap edge proportionally with the increase of the magnetic field. Instead, when the magnetic field is applied with respect to the rotational symmetry the fibre axis, the sensor exhibits high polarisation sensitivity for a specific wavelength band, providing the possibility of directional measurements.
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页数：6
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