Temperature and vibration insensitive fiber optic vector magnetic field sensor

Zhou, Yanru; Liu, Xiaoxiang; Fan, Lifan; Liu, Wenyao; Xing, Enbo; Tang, Jun; Li, Jun

doi:10.1016/j.optcom.2022.129178

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…The high values of the coefficient of determination R 2 for the third-order polynomial mean that a convenient look-up table can be compiled to list the correct value of the preset current. Third, the optical scheme with a broadband source and spectral interrogation is simpler that those at two wavelengths with temperature compensation which require polarization beamsplitters, fiber optic splitters [18], or those based on magnetostrictive materials and magnetic fluids [20][21][22][23][24][25][26][27][28][29].…”

Section: Two Points Methods For Simultaneous Two-parameter Measurementmentioning

confidence: 99%

“…To account for temperature dependence, detection at two wavelengths has been proposed [18], or the temperature dependence of the BGO crystal has been taken into account [19]. The problem of the temperature dependence for the other types of current sensor has been addressed in different ways depending on the interrogation scheme and the magneto-sensitive material, using either temperature compensation [18][19][20][21][22][23] or simultaneous magnetic field and temperature measurement in the case of magnetic field sensors with spectral interrogation [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Two Points Methods For Simultaneous Two-parameter Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Eftimov,

Dyankov,

Kolev

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…In the last few years, FOTSs based on interferometric principles, including Fabry–Pérot interferometers (FPI) [ 13 , 14 , 15 ], Mach–Zehnder interferometers (MZI) [ 16 , 17 , 18 ], Michaelson interferometers (MI) [ 19 , 20 ], and Sagnac interferometers (SI) [ 21 , 22 , 23 ], have become more and more popular because of the advantages of high sensitivity and the ability to maintain a high level of stability and reproducibility in harsh environments. Among them, the most favored structure for building various types of fiber-optic sensors is the MZI.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement

Ding,

Lin,

Liu

et al. 2024

Sensors

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A highly sensitivity balloon-like fiber interferometer based on ethanol coating is presented in this paper. The Mach–Zehnder interferometer is formed by bending a single-mode fiber to a balloon-like structure and nested in the Teflon tube. Then, an ethanol solution was filled into the tube of the balloon-like fiber interferometer by the capillary effect. Due to the high sensitivity of the refractive index (RI) of ethanol solutions to temperature, when the external temperature varies, the optical path difference changes. The change in temperature can be detected by the shift in the interference spectrum. Limited by the size of the balloon-like structure, three kinds of these structures with different sensitive lengths were prepared to select the best parameters. The sensitive lengths were 10, 15 and 20 mm, respectively, and the RI detection performance of each structure in 10~26% NaCl solutions was investigated experimentally. The results show that when the sensitive length is 20 mm, the RI sensitivity of the sensor is the highest, which is 212.88 nm/RIU. Ultimately, the sensitive length filled with ethanol is 20 mm. The experimental results show that the temperature sensitivity of the structure is 1.145 nm/°C in the range of 28.1 °C~35 °C, which is 10.3 times higher than that of an unfilled balloon-like structure (0.111 nm/°C). The system has the advantages of low cost and easy fabrication, which can potentially be used in high-precision temperature monitoring processes.

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