Detachable triangular-shaped bulk-optic glass sensor for simultaneous three-phase current measurement

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journalNot applicable

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Author(s)

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Detail(s)

Original languageEnglish
Pages (from-to)174-181
Journal / PublicationProceedings of SPIE - The International Society for Optical Engineering
Volume4578
Publication statusPublished - 2001

Conference

TitleFiber Optic Sensor Technology and Applications 2001
PlaceUnited States
CityNewton, MA
Period30 October - 1 November 2001

Abstract

In this paper, we describe a detachable triangular-shaped bulk-optic glass sensor for three-phase current measurement using only one laser source. The sensor is constructed from three separate SF6 glass rods that form a triangle, where the coils of the three-phase current are mounted separately on the glass rods. Laser light is guided through the glass in a closed loop by reflecting twice at the critical angle at the two corners of the triangle. On the reflection surface of each corner, light is tapped with a right-angle prism that is pressed against the surface. The light beams tapped from the two corners and that emerging from the exit face of the sensor carry different components of the three-phase current. By processing these three light signals, the three phases of the current can be determined. To demonstrate the principle, an experimental sensor has been constructed and tested.

Research Area(s)

  • Bulk-optic sensor, Faraday effect, Optical current sensor, Three-phase current measurement

Citation Format(s)

Detachable triangular-shaped bulk-optic glass sensor for simultaneous three-phase current measurement. / Kong, K. H.; Chu, Beatrice C.B.; Chung, Henry S.H.; Mok, K. T.; Chiang, K. S.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4578, 2001, p. 174-181.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journalNot applicable