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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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High-sensitivity vector magnetic field sensor based on side-polished fiber plasmon and ferrofluid
Optics Letters
|October 2, 2018
Summary
This study introduces a novel vector magnetic field sensor using a fiber-optic surface plasmon resonance (SPR) structure with ferrofluid. The sensor accurately measures both magnetic field intensity and orientation, offering high sensitivity for various applications.
Area of Science:
- Optoelectronics
- Nanotechnology
- Magnetics
Background:
- Magnetic field sensing is crucial across scientific and industrial domains.
- Existing sensors often lack sensitivity or the ability to measure vector components simultaneously.
- Ferrofluids offer unique magneto-optical properties suitable for sensor development.
Purpose of the Study:
- To propose and demonstrate a high-sensitivity vector magnetic field sensor.
- To integrate surface plasmon resonance (SPR) with ferrofluid for enhanced performance.
- To simultaneously measure magnetic field intensity and orientation.
Main Methods:
- Fabrication of a side-polished fiber (SPF) based SPR structure.
- Integration of ferrofluid with the SPR sensor.
- Characterization of sensor response to varying magnetic field intensity and orientation.
- Utilizing the magneto-optical properties of ferrofluid and SPR sensitivity.
Main Results:
- Achieved high sensitivity up to 598.7 pm/Oe for magnetic field intensity.
- Demonstrated sensitivity of -5.63 nm/deg for magnetic field orientation.
- The sensor simultaneously detects both intensity and orientation of the magnetic field.
- The combined plasmonic, magnetic, and fiber-optic approach yields superior performance.
Conclusions:
- The developed sensor offers a novel solution for vector magnetic field measurement.
- High sensitivity and simultaneous vector detection capabilities are key advantages.
- Potential applications span medicine, industry, and military sectors.
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