Transducer for optical data transmission

Details Transducer for optical data transmission Transducer for optical data transmission

1982-04-26

1984-10-23

Britton, Howard W.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455606, H04B 900

Patent

active

044792646

ABSTRACT:
A transducer for optical data transmission is disclosed in which an optical signal is encoded with information representative of a parameter being measured and transmitted to a remote measurement and control apparatus site for decoding. An input optical signal is received by the transducer and separated into first and second portions. The first portion of the optical input signal is converted to electrical energy and is used to power the transducer. The second portion of the input optical signal is modulated in response to the measured parameter and the modulated signal transmitted back to the remote site.

REFERENCES:
patent: 4326298 (1982-04-01), Fromm
patent: 4346478 (1982-08-01), Sichling
McGowan, "Multiple Pressure Transmitters Speak Digital on Two Wires", Control Engineering, Dec. 1979.
"Smoke Alarm Uses Fiber Optics for Hazardous Areas", Electronic Design, Sept. 3, 1981, at p. 64.

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