Multiplex communications – Wide area network – Packet switching
Patent
1986-02-11
1988-08-30
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
455615, H04J 120
Patent
active
047681861
ABSTRACT:
A communication system in which analog signals are multiplexed and then converted into frequency modulated signals which are applied to the laser of an optical transmitter to intensity modulate the laser output. The laser output is supplied to one end of an optical fiber, the other end of which is connected to an optical receiver. The output signals of the optical receiver are applied to a frequency demodulator, and the output signals of the frequency demodulator are demultiplexed to provide the corresponding analog signals. The system may include pilot tone signals for remote monitoring of conditions at an unmanned station, and preferably, some of the multiplexed signals are emphasized relative to the other signals prior to application to the frequency modulator and are correspondingly deemphasized at the frequency demodulator output.
REFERENCES:
patent: 2924703 (1960-02-01), Sichak et al.
patent: 3087065 (1963-04-01), Mutschler
patent: 3566127 (1971-02-01), Hafner
patent: 4004078 (1977-01-01), Gorog
patent: 4061577 (1977-12-01), Bell
patent: 4367548 (1983-01-01), Cotten, Jr. et al.
patent: 4441180 (1984-04-01), Schussler
Altman et al.-Fiber Optics for the Shipboard-Conf. Proc. of the Soc. Photo Opt Instrumentation Engs-Wash., DC-Mar. 28, 29, 1978-SPIE vol. 139, Guided Wave Optical Systems and Devices, 1978, pp. 12-18.
Haynie-Multispeed Multiplexers-Record AT&T Bell Labs-vol. 61, #10, Dec. 1983, 6 pages.
GTE Lenkurt Demodulator-"FDM Modulation Plans"-Sep. 1973, 11 pages.
L'Echo des Recherches (France)-Jul. 1977-pp. 24-31, No. 89.
Olms Douglas W.
Pirelli Cable Corporation
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