A High-Sensitivity Current Sensor Utilizing CrNi Wire and Microfiber Coils

Xie, Xiaodong; Li, Jie; Sun, Li-Peng; Shen, Xiang; Jin, Long; Guan, Bai‐Ou

doi:10.3390/s140508423

Cited by 23 publications

(16 citation statements)

References 13 publications

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“…This sensor is cost-effective and simple to fabricate, making it attractive for industrial applications. A current sensor was proposed in 2014 by coiling the microfiber around a Chrome-nickel wire which is conductive to current [175]. The obtained current sensitivity was as high as 220.65 nm/A 2 , which was two orders of magnitude higher than the previous results.…”

Section: Microfiber Coilsmentioning

confidence: 87%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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Recent developments in fiber-optic sensing have involved booming research in the design and manufacturing of novel micro-structured optical fiber devices. From the conventional tapered fiber architectures to the novel micro-machined devices by advanced laser systems, thousands of micro-structured fiber-optic sensors have been proposed and fabricated for applications in measuring temperature, strain, refractive index (RI), electric current, displacement, bending, acceleration, force, rotation, acoustic, and magnetic field. The renowned and unparalleled merits of sensors-based micro-machined optical fibers including small footprint, light weight, immunity to electromagnetic interferences, durability to harsh environment, capability of remote control, and flexibility of directly embedding into the structured system have placed them in highly demand for practical use in diverse industries. With the rapid advancement in micro-technology, micro-structured fiber sensors have benefitted from the trends of possessing high performance, versatilities and spatial miniaturization. Here, we comprehensively review the recent progress in the micro-structured fiber-optic sensors with a variety of architectures regarding their fabrications, waveguide properties and sensing applications.

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Section: Microfiber Coilsmentioning

confidence: 87%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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“…The average electrical current sensing sensitivity is around 67.297 lm/A 2 , which is two orders of magnitude higher than other current sensors based on thermal effect described earlier. [9][10][11][12][13] As for the result by simulation and calculation is larger than the experimental result, we attribute the reasons to some approximations such as the neglect of contact resistance in the simulation and heat transfer coefficient of air in the process of simulation. We can decrease the contact resistance by increasing the contact width or changing the electrodes to be metal Ni in the experiment to improve the sensor's performance.…”

mentioning

confidence: 94%

“…1 A considerable number of electrical current sensors have been developed utilizing different optical fiber structures such as fiber interferometers, gratings, lasers, and resonators. They are mainly divided into several categories, for example, Faraday effect, 2-4 Ampere force, 5 thermal effect, [6][7][8][9][10][11][12][13] etc. The first kind of current sensors is limited by small Verdet constant of optical fiber material and needs a large number of coils to gain a large sensitivity and polarization dependent manipulation.…”

mentioning

confidence: 99%

“…[19][20][21] Based on the graphene-microfiber-integrated device, we demonstrate an electrical current sensor with an ultra-high sensitivity of $67.297 lm/A 2 , which is two orders of magnitude higher than current sensors based on thermal effect publishedearlier. [9][10][11][12][13] The fabrication process is reliable and permits easy handling. The device is compact and stable.…”

mentioning

confidence: 99%

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Optical electrical current sensor utilizing a graphene-microfiber-integrated coil resonator

Yan

Zheng

Chen

et al. 2015

Applied Physics Letters

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A graphene-based electrical current sensor is proposed utilizing a microfiber coil resonator. Monolayer graphene sheet with a large sheet resistance is transferred onto the surface of a glass capillary rod. A microfiber is spirally wrapped around the graphene sheet to form a coil resonator. Heat generated from electrical current shifts the resonant wavelength because of the thermal effect in the microfiber resonator. The sensor exhibits a very good performance with a high sensitivity of 67.297 μm/A2, which is two orders of magnitude higher than that reported earlier. Our results show that microfiber-graphene-integrated devices have great potential for miniature and highly sensitive fiber sensors for monitoring electrical current.

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“…It has attracted wide attention in the past three decades. For example, an OFCS has been proposed based on the Fabry-Perot interferometer using a fiber Bragg grating demodulation [4]; an OFCS has been reported based on a long-period fiber grating with a permanent magnet [5]; and an OFCS has been designed based on microfiber and chrome-nickel wire [6]. Moreover, the most widely used OFCS mechanism by far, the Faraday effect, which has been explored in many configurations [7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

An Elimination Method of Temperature-Induced Linear Birefringence in a Stray Current Sensor

Xing

et al. 2017

Sensors

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In this work, an elimination method of the temperature-induced linear birefringence (TILB) in a stray current sensor is proposed using the cylindrical spiral fiber (CSF), which produces a large amount of circular birefringence to eliminate the TILB based on geometric rotation effect. First, the differential equations that indicate the polarization evolution of the CSF element are derived, and the output error model is built based on the Jones matrix calculus. Then, an accurate search method is proposed to obtain the key parameters of the CSF, including the length of the cylindrical silica rod and the number of the curve spirals. The optimized results are 302 mm and 11, respectively. Moreover, an effective factor is proposed to analyze the elimination of the TILB, which should be greater than 7.42 to achieve the output error requirement that is not greater than 0.5%. Finally, temperature experiments are conducted to verify the feasibility of the elimination method. The results indicate that the output error caused by the TILB can be controlled less than 0.43% based on this elimination method within the range from −20 °C to 40 °C.

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A High-Sensitivity Current Sensor Utilizing CrNi Wire and Microfiber Coils

Cited by 23 publications

References 13 publications

Recent Developments in Micro-Structured Fiber Optic Sensors

Recent Developments in Micro-Structured Fiber Optic Sensors

Optical electrical current sensor utilizing a graphene-microfiber-integrated coil resonator

An Elimination Method of Temperature-Induced Linear Birefringence in a Stray Current Sensor

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