Optically-Powered Transducer With Optical-Fiber Data Link

Akira Ohte; Koji Akiyama; Isamu Ohno

doi:10.1117/12.942655

17 September 1984 Optically-Powered Transducer With Optical-Fiber Data Link

Akira Ohte, Koji Akiyama, Isamu Ohno

Proceedings Volume 0478, Fiber Optic and Laser Sensors II; (1984) https://doi.org/10.1117/12.942655
Event: 1984 Technical Symposium East, 1984, Arlington, United States

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.

Citation Download Citation

Akira Ohte, Koji Akiyama, and Isamu Ohno "Optically-Powered Transducer With Optical-Fiber Data Link", Proc. SPIE 0478, Fiber Optic and Laser Sensors II, (17 September 1984); https://doi.org/10.1117/12.942655

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