Results 301 to 310 of about 57,527 (337)
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Intensity-type fiber optic electric current sensor
SPIE Proceedings, 1991Simple, rugged intensity type fiber-optic vibration sensors have been developed and pre- production prototypes are being evaluated. The transduction element consists of a pair of multimode optical fibers, one mounted on a cantilever reed, the second on a fixed anvil.
Edward F. Carome +3 more
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Fiber-optic current sensor with heterodyne detection
Review of Scientific Instruments, 1986The toroidal plasma current in the ZT-40M experiment (100–380 kA) has been measured using a fiber-optic sensor. This sensor consists of six turns of permanently twisted, single-mode fiber which was wound poloidally around the experiment. By modifying the laser output to a rotating linear polarization, amplitude-independent single output heterodyne ...
G. I. Chandler +3 more
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Fiber-optic current sensor utilized for DC high current calibration
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016), 2016A fiber-optic current sensor based on the Faraday effect is proposed as a value transfer standard to calibrate the direct high current for the electrowinning industry. The spun high birefringence optical fiber with strong resistance to accumulative bend-birefringence in the case of multi-turns sensing coil is packaged into a sensing element. The closed-
Chuansheng Li +4 more
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Polarimetric Fiber-Optic Current Sensor With Integrated-Optic Polarization Splitter
Journal of Lightwave Technology, 2019We report on a simple, metering class polarimetric fiber-optic current sensor (FOCS) for electric power transmission systems. The sensor uses a fiber coil operated in reflection mode and an integrated-optic polarization splitter (IOPS) for interrogation.
Klaus Bohnert +4 more
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Sagnac Fiber-Optic Current Sensor Without Vibration Sensitivity
ACTA PHOTONICA SINICA, 2010To eliminate the vibration sensitivity,a light path improved method isproposed,which makes dis charge of Sagnac effect with Sagnac effect itself and do not disturb Farady effect at all.Then the polarization states of the lights spreading in the improved light path are analyzed with Jones matrix.The experiment results are in good agreement with the ...
王嘉 WANG Jia +2 more
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Optical fiber current sensor with external conversion
SPIE Proceedings, 2016This article presents results of research on an optical fiber current sensor with external conversion (OFCS-EC). The sensor setup presented in the scope of this paper was developed from the optical fiber magnetic field sensor. The OFCSEC works on the principle of Faraday effect. Therefore, the active element of the sensor was made of the reliable glass
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Applications of high-voltage fiber optic current sensors
2006 IEEE Power Engineering Society General Meeting, 2006Various applications of a fiber optic current sensor are explored. Flexibility and inherent beneficial features of the technology make it appropriate for many applications, including some novel protection applications. These applications include regular high-voltage AC metering and protection, accurate wide dynamic range metering, high voltage DC, high
F. Rahmatian, J.N. Blake
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Fiber-optic sensor for detecting electric current pulses
Optical Sensors 2019, 2019The response of an interferometric low-coherence fiber-optic electric current sensor (FOCS) to a short current pulse is studied theoretically and experimentally. The main feature of current pulse sensing is analyzed that manifests itself when the duration of the pulse is comparable to or less than the light propagation time in the sensing fiber.
Yan Przhiyalkovskiy +4 more
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Optical fiber current sensor research: review and outlook
Optical and Quantum Electronics, 2016Optical fiber current sensor (OFCS) based on Faraday magneto-optic effect has many advantages of immunity against electromagnetic interference, high sensitivity and wide dynamic range. Thus, OFCS has extensive application prospects. In this paper, the authors present a review on OFCS. The basic principle of OFCS is firstly discussed.
Ruilin Wang +3 more
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Electro-optic Kerr effects in optical fiber current sensors
13th International Conference on Optical Fiber Sensors, 1999We discuss the influence of the electro-optic Kerr effect on optical fiber current sensors in a simulated Gas Insulated System environment. We also show that current, voltage, and phase can be measured using one transducer.
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