Differential loss magnetic field sensor using a ferrofluid encapsulated D-shaped optical fiber
| Autor: | Georgios Violakis, Nikolaos Korakas, Stavros Pissadakis |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Ferrofluid
Rotating magnetic field Materials science Optical fiber business.industry Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics law.invention Magnetic field 010309 optics Optics law Attenuation coefficient 0103 physical sciences 0210 nano-technology business Magneto Refractive index Intensity (heat transfer) |
| Zdroj: | Optics letters. 43(1) |
| ISSN: | 1539-4794 |
| Popis: | A ferrofluid immersed, D-shape optical fiber exhibits differential loss up to 12 dB with respect to an azimuthally rotating magnetic field placed around its longitudinal axis, manifested in its measured transmission power. Investigating the magneto induced refractive index and loss changes by using ferrofluid overlaid diffractive elements a differential loss mechanism is revealed, associated with the relative light polarization direction and the magnetic field application direction. The results were used for performing modal profile simulations of ferrofluid immersed D-shape optical fiber. It is demonstrated that such an optical system can act as a magnetic field sensor with field angle and intensity sensing capabilities. |
| Databáze: | OpenAIRE |
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