High sensitivity and large measurement range magnetic field micro-nano fiber sensor based on Mach-Zehnder interference

Zhang, Hongtao; Xie, Zhanwu; Yan, Haitao; Li, Pengfei; Wang, Peng; Han, Daofu

doi:10.1016/j.optlastec.2022.108455

Cited by 7 publications

(1 citation statement)

References 28 publications

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“…Electric current and/or magnetic field fiber optic sensors have been known, developed and commercialized [1] for quite some time for the purposes of the power industry [2] and special applications [3]. These sensors are based either on the Faraday effect in the fiber itself, or in bulk materials [4] which use optical fiber transducers, such as fiber Bragg gratings (FBG), interferometers, or refractometers [5][6][7][8][9][10][11] in combination with magnetic field sensitive materials. These sensors are characterized by specific advantages and disadvantages as well as varying simplicity and complexity.…”

Section: Introductionmentioning

confidence: 99%

A Spectrally Interrogated Polarimetric Optical Fiber Sensor for Current Measurement with Temperature Correction

Eftimov,

Dyankov,

Kolev

et al. 2023

Sensors

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We report on a study of the temperature dependence of the response of a BSO crystal based polarimetric current sensor with spectral interrogation. Two possible interrogation schemes are discussed. The spectral dependence of the optical rotation along the crystal caused by temperature and current changes is investigated, and approximate dependences for the sensitivities to current SI and temperature ST are derived. A mixed term in the response with spectral interrogation is revealed, the elimination of which is achieved by tracking wavelength shifts Δλ1 and Δλ2 of two distinct extrema in the polarimetric response. A temperature independent second degree equation for the current changes ΔI as a function of the measured spectral shifts is derived and tested.

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