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Proceedings Paper

Optical current transducer with the compensation for the polarization and the temperature disturbance
Author(s): Deming Liu; Jingyi He; Dexiu Huang
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Paper Abstract

This paper presents a novel bulk type of optical current transducer (OCT), in which a single-mode fiber to multi-mode fiber coupling configuration is adopt to reduce the optical loss and to restrain the random mode-coupling noise in a conventional multi-mode fiber to multi-mode fiber coupling structure. A special design is used to automatically compensate the changes of the State of Polarization (SOP) of the optical fiber. Experiment shows that about 10 times of precision improvement can be achieved compared with conventional sensing element without SOP compensation. The OCT system employs microcomputer together with corresponding software to accomplish signal processing. The OCT system employs microcomputer together with corresponding software to accomplish signal processing. The overall performance of the OCT system is tested experimentally. The results show that the system has good long-term stability - the precision during 100 hours is 0.3 percent, and temperature compensation can considerably improve the temperature characteristic of the system.

Paper Details

Date Published: 11 November 1999
PDF: 8 pages
Proc. SPIE 3897, Advanced Photonic Sensors and Applications, (11 November 1999); doi: 10.1117/12.369320
Show Author Affiliations
Deming Liu, Huazhong Univ. of Science and Technology (China)
Jingyi He, Huazhong Univ. of Science and Technology (China)
Dexiu Huang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3897:
Advanced Photonic Sensors and Applications
Robert A. Lieberman; Anand Krishna Asundi; Hiroshi Asanuma, Editor(s)

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