Simultaneous current and vibration measurement based on interferometric fiber optic sensor

Yu, Aodi; Pang, Fubing; Yuan, Yubo; Huang, Yuhao; Li, Shiyu; Yu, Shengsheng; Zhou, Minghui; Xia, Li

doi:10.1016/j.optlastec.2023.109223

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…At the end of the optical fiber coil, reflection occurs, and the two circularly polarized light beams propagate back along the initial path in opposite polarization states (i.e., left-handed becomes right-handed, and vice versa), resulting in the Faraday phase shift becoming twice the original value. After passing through the λ/4 wave plate again, they become two orthogonal linearly polarized light beams, which interfere at the polarizer, resulting in an optical intensity signal that varies with the measured current [7]. The optical intensity signal can be calculated using the following equation:…”

Section: Basic Structure and Working Principle Of Feedback Type All-f...mentioning

confidence: 99%

Research on feedback type all fiber current transformer status monitoring

Chen,

Guo,

Tian

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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Section: Basic Structure and Working Principle Of Feedback Type All-f...mentioning

confidence: 99%

Research on feedback type all fiber current transformer status monitoring

Chen,

Guo,

Tian

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

Self Cite

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“…These sensors utilize the principle of measuring changes in light propagation through a fiber optic to detect and quantify vibrations or mechanical disturbances. They offer several advantages over traditional vibration sensing technologies, such as higher sensitivity, immunity to electromagnetic interference and the ability to cover large distances without signal degradation [3,4]. Such sensors have been used in structural monitoring, oil and gas industry, intrusion detection, industrial machinery, seismic monitoring, etc.…”

Section: Introductionmentioning

confidence: 99%

Design and study of fiber optic interferometric devices applied to vibration detection systems

Guevara-Hernandez,

Hernandez-Garcia,

Filoteo-Razo

et al. 2024

Physics and Simulation of Optoelectronic Devices XXXII

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In this work, we present the design and analysis of fiber optic interferometric devices for its application in vibration detection, allowing to create an optical system based on interferometric interactions that can vary the sensitivity through external signals e.g., NLPs (noise-like pulses). The simulation of numerical schemes of the fiber optic interferometer using the MATLAB software is presented, which will allow the development of a first prototype of experimental model. Numerical implementations will be performed in MATLAB using Jones matrices to model the behavior of the fiber optic interferometer. This numerical analysis allows to develop a compact experimental model, capable of varying its transmission, sensitivity and FSR (free spectral range), being able to study the interferometric response to external vibrations and modifying the input parameters, such as power, polarization, and operation range.The input characteristics for the interferometric system can be generated by a fiber optic pulsed laser e.g., F8L (figure eight laser), which can vary its output temporarily, spectrally and in polarization. The complete analysis will allow to propose an all-fiber experimental scheme that is compact and portable compared to conventional interferometric arrays, as are works where arrays of hundreds of meters are implemented, based on the study of fiber optic resonators that improves vibration detection system sensitivity. Subsequently, the first tests were performed using MATLAB functions based on pattern recognition, filtering, and amplification of repetitive signals, which will be experimentally tested in the interferometer in a future work. Finally, potential future applications of this work include detection of vibration anomalies in structures and motors, as well as the detection of sound for integration in specialized medical devices to treat hearing problems.

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“…Fiber optic current sensors can be classified into several main types based on various principles. The first type of fiber optic current sensor uses the Faraday magneto optic effect to measure current [2,[5][6][7][8][9][10]. In this method, since the current cannot be directly measured through optical fibers, it is usually indirectly measured by measuring the magnetic field generated by Faraday magneto-optical effect.…”

Section: Introductionmentioning

confidence: 99%

High sensitivity fiber optic current sensor based on Fabry–Perot interferometer manufactured by femtosecond laser

Hu,

Guo,

Jiang

et al. 2024

Meas. Sci. Technol.

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A novel fiber optic current sensor was prepared based on femtosecond laser processing technology and magnetostrictive material Terfenol-D.Its principle is to use the linear stretching of Terfenol-D material under the action of current to cause linear shift in the sensor spectrum. Firstly, we fabricated Fabry-Perot interfenometer (FPI1) using femtosecond laser in a tapered few mode fiber. Then, FPI2 was prepared using the end face of FPI1, quartz capillary, and single-mode fiber. When cascading FPI1 and FPI2, by adjusting the air-cavity length of FPI2, they form a harmonic vernier effect (HVE) sensor. In HVE sensors, FPI1 forms a cantilever beam inside the capillary, which is not affected by axial strain. Therefore, when the axial strain acts on the HVE sensor, the effective length of axial strain increases to the entire length of the quartz capillary, greatly amplifying the strain sensitivity. Finally, the Terfenol-D rod is pasted onto the HVE strain sensor, and the strain change coupled to the strain sensor caused by magnetic field changes is detected by measuring the wavelength shift of the sensor. As the magnetic field strength is directly proportional to the current in the energized coil, this sensor can measure current. The experiment found that the current sensitivity of the sensor is 5.30 nm/A in the range of 0.5 A to 3.3 A, and the linear fitting coefficient is 0.9926. Additionally, the minimum measurable current change of the sensor is 23 mA, without hysteresis effects. The current sensor is of advantages of high sensitivity, stable sensing performance, compact structure, easy fabrication and low cost, meaning wide application prospect.

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Simultaneous current and vibration measurement based on interferometric fiber optic sensor

Cited by 10 publications

References 27 publications

Research on feedback type all fiber current transformer status monitoring

Research on feedback type all fiber current transformer status monitoring

Design and study of fiber optic interferometric devices applied to vibration detection systems

High sensitivity fiber optic current sensor based on Fabry–Perot interferometer manufactured by femtosecond laser

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