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Development of Fiber Optic Current Sensor
Advanced Materials Research, 2014Current measuring high-precision methods and devices are one of the most important modern engineering development lines in optimal energy consumption sphere. However, there are a few small-sized instruments which allow conducting precision measurements without breaking the circuit. This paper presents information about conducted Faraday Effect research
Mikhail G. Grigoriev, Nikita V. Turushev
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Self-Compensative Fiber Optic Current Sensor
Journal of Lightwave Technology, 2021The measurement accuracy of fiber optic current sensors (FOCS) is closely related to the stability of Verdet constant and the polarization characteristic of the sensing coils, which are easily influenced by environmental disturbance. In this article, a self-compensative fiber optic current sensor (SFOCS) with two sensing heads made of single mode ...
Yuhao Huang +4 more
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Portable fiber optic current sensor
SPIE Proceedings, 1991We present a ruggedized portable fiber-optic Faraday-rotation current sensor, that exhibits good and stable performance characteristics. The sensor has been tested and calibrated against a commercial induction-coil type device. The resultant scale-factor is in a very good agreement with the theoretical one, calculated following extensive fiber ...
Ehud Shafir +3 more
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Vibration-insensitive fiber-optic current sensor
Optics Letters, 1993The measurement of the electric current with an optical fiber sensor can be made insensitive to external vibrations that act on the leading fiber by using a circuit involving a mirrored Faraday rotator and a highly twisted low-birefringence fiber. A description of the optical configuration as well as our first experimental results are presented.
N. C. Pistoni, MARTINELLI, MARIO
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Linear birefringence effects on fiber-optic current sensors
Applied Optics, 1988The occurrence of linear birefringence is inevitable when dealing with fiber optics. Intrinsic birefringence can be minimized, but deploying the fiber on an experiment will introduce stress birefringence due to bending and pressure. We have studied the effects of this extraneous linear birefringence on the measurement of current-induced circular ...
P R, Forman, F C, Jahoda
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The Inherent Temperature Compensation to Fiber-Optic Current Sensor
2012 Fifth International Joint Conference on Computational Sciences and Optimization, 2012The quarter-wave plate is a crucial element of fiber-optic current sensor. The Verdet constant fluctuation which is caused by temperature decreases the stability of fiber-optic current sensor. Yet the temperature dependence of Verdet constant can be inherently compensated by means of non-perfect quarter-wave plate.
Hui Wang, Xiaolong Liu
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Optical Engineering, 2003
When a current passes through a metal-coated optical fiber, the Ohm's heat induces a phase change of the guided light within the fiber. This microampere current sensor is principally designed based on this thermal effect.A Michelson interferometer is used for detecting this phase change.
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When a current passes through a metal-coated optical fiber, the Ohm's heat induces a phase change of the guided light within the fiber. This microampere current sensor is principally designed based on this thermal effect.A Michelson interferometer is used for detecting this phase change.
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Computer Modeling of Fiber Optic Current Sensor
2020Despite all the advantages of using the fiber optic current sensors in high-voltage power networks, this technology has the significant weaknesses. They are the instability of the sensor readings and insufficient measurement accuracy. We observed parasitic response to the set of the entire factors in the real prototype of the fiber optic current sensor.
Valentina Temkina +2 more
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Current sensor utilizing a fiber-optic waveguide
Soviet Journal of Quantum Electronics, 1983A study was made of the influence of homogeneous and circular magnetic fields on a single-mode optical fiber exhibiting linear birefringence and wound into a coil with a circumference equal to the beat length. It was found that the sensitivity of a current sensor based on such a fiber can be as high as that of sensors utilizing an isotropic fiber.
S M Kozel +3 more
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Plastic Fiber Optical Isolator and Current Sensor
Japanese Journal of Applied Physics, 1992The Verdet constant of poly-α-methylstyrene fiber doped with a biphenyl compound showed a value beyond 0.09 min·Oe-1·cm-1 at 488 nm. The optical fiber isolator for the 488-nm laser, which was constructed using the above plastic fiber and a pulse magnetic field, had about 20-dB isolation.
Shinzo Muto +3 more
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