Optical fiber magnetic field sensors based on magnetic fluid: A review

Nélia Alberto, Maria Fátima Domingues, Carlos Marques, Paulo André, Paulo Antunes

Research output: Contribution to journalReview articlepeer-review

123 Scopus citations


Magnetic field sensing is an important issue for many application areas, such as in the military, industry and navigation. The current sensors used to monitor this parameter can be susceptible to electromagnetic interferences, however due to their advantages over the traditional sensors, the optical fiber devices could be an excellent alternative. Furthermore, magnetic fluid (MF) is a new type of functional material which possesses outstanding properties, including Faraday effect, birefringence, tunable refractive index and field dependent transmission. In this paper, the optical fiber magnetic field sensors using MF as sensing element are reviewed. Due to the extensive literature, only the most used sensing configurations are addressed and discussed, which include optical fiber grating, interferometry, surface plasmon resonance (SPR) and other schemes involving tailored (etched, tapered and U-shaped) fibers.

Original languageBritish English
Article number4325
JournalSensors (Switzerland)
Issue number12
StatePublished - Dec 2018


  • Fiber grating
  • Interferometric sensor
  • Magnetic field
  • Magnetic fluid
  • Optical fiber sensors
  • Surface plasmon resonance (spr)
  • Tailored fibers


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