TY - JOUR
T1 - A magnetic field fiber optic sensor with magneto-optic polymers and nanoparticle core-shell polymers
AU - Peyghambarian, N.
AU - Amirsolaimani, B.
AU - Gangopadhyay, P.
AU - Showghi, S.
AU - Lacomb, L.
AU - Pyun, J.
AU - Persoons, A.
AU - Norwood, R. A.
N1 - Funding Information:
The initial work was funded by the US Air Force Office of Scientific Research (AFOSR). The more recent work has been funded by the US Defense Advanced Research Projects Agency (DARPA) and the State of Arizona’s Technology and Research Initiative Fund (TRIF).
Publisher Copyright:
©2019 Old City Publishing, Inc.
PY - 2019
Y1 - 2019
N2 - Miniaturized magnetic field sensors have become increasingly important in various applications, such as geophysical exploration for minerals and oil, volcanology, earthquake studies, and bio-medical imaging. Existing magnetometers lack either the required spatial or the temporal resolution or are restricted to costly shielded labs and cannot operate in an unshielded environment. Increasing the spatio-temporal resolution would allow for real-time measurements of magnetic fluctuations with high resolution. Here we report on a new nanocomposite-based system for miniaturized magnetic field sensing. The sensor is based on Dy 3+ -doped magnetite and cobalt ferrite nano-particles dispersed in a polymer matrix. Operation has been demonstrated at room temperature and in an unshielded environment. A compact fiber-optic interferometer is used as the detection mechanism with 20 fT/Hz sensitivity. We investigated the magnetic field response of the sensor and demonstrated the measurement of the human heartbeat as a potential application.
AB - Miniaturized magnetic field sensors have become increasingly important in various applications, such as geophysical exploration for minerals and oil, volcanology, earthquake studies, and bio-medical imaging. Existing magnetometers lack either the required spatial or the temporal resolution or are restricted to costly shielded labs and cannot operate in an unshielded environment. Increasing the spatio-temporal resolution would allow for real-time measurements of magnetic fluctuations with high resolution. Here we report on a new nanocomposite-based system for miniaturized magnetic field sensing. The sensor is based on Dy 3+ -doped magnetite and cobalt ferrite nano-particles dispersed in a polymer matrix. Operation has been demonstrated at room temperature and in an unshielded environment. A compact fiber-optic interferometer is used as the detection mechanism with 20 fT/Hz sensitivity. We investigated the magnetic field response of the sensor and demonstrated the measurement of the human heartbeat as a potential application.
KW - Fiber optic interferometer
KW - Magnetic field sensor
KW - Magneto-optic polymer
KW - Nanocore shell polymer
KW - Polarization rotation
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M3 - Article
AN - SCOPUS:85061978129
SN - 1543-0537
VL - 50
SP - 227
EP - 229
JO - Nonlinear Optics Quantum Optics
JF - Nonlinear Optics Quantum Optics
ER -