Transmissive optical fiber magnetic field sensor based on ferrofluids

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A compact optical fiber magnetic field sensor is reported which relies on the magnetic field induced displacement of a ferrofluid lying in the gap between two single mode optical fibers (SMFs) that are aligned face to face. The ferrofluid displacement alters the coupling of light from the input optical fiber to the output optical fiber. When the applied magnetic field changes from 0 mT to 10 mT the optical attenuation changes from 0 dB to -28 dB.
Original languageEnglish
Number of pages3
Publication statusPublished - 1 Nov 2017
EventIEEE SENSORS 2017 - Scottish Exhibition and Conference Centre, Glasgow, United Kingdom
Duration: 29 Oct 20171 Nov 2017


ConferenceIEEE SENSORS 2017
Country/TerritoryUnited Kingdom
Internet address


  • ferrofluid
  • optical fiber sensor
  • magnetic field sensor


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