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Proceedings Paper

Optically-Powered Transducer With Optical-Fiber Data Link
Author(s): Akira Ohte; Koji Akiyama; Isamu Ohno
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Paper Abstract

A novel transducer with optical-fiber data link -- to provide electrical isolation and immunity from electromagnetic noise -- has been developed. A pulse-position (or pulse-frequency) modulated optical signal is transmitted by optical fiber from a remote converter to mainframe. Light of a different wavelength is transmitted via the same optical fiber from a laser in the mainframe to a photocell battery in the remote converter, to power it. Signal and "power" light beams are separated by dichroic mirrors. A practical thermocouple converter is described; it consumes only 84 μW, and is powered by light from a 5 mW semiconductor laser in the mainframe.

Paper Details

Date Published: 17 September 1984
PDF: 6 pages
Proc. SPIE 0478, Fiber Optic and Laser Sensors II, (17 September 1984); doi: 10.1117/12.942655
Show Author Affiliations
Akira Ohte, Yokogawa Hokushin Electric Corporation (Japan)
Koji Akiyama, Yokogawa Hokushin Electric Corporation (Japan)
Isamu Ohno, Yokogawa Hokushin Electric Corporation (Japan)

Published in SPIE Proceedings Vol. 0478:
Fiber Optic and Laser Sensors II
Emery L. Moore; O. Glenn Ramer, Editor(s)

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