Coaxial cable/fiber optic bus network

Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency

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Details

455601, 455606, 358901, H04B 900

Patent

active

044083530

ABSTRACT:
A coaxial cable/fiber optic bus network utilizes a coaxial cable for the main signal bus in a distribution system. The tap samples the electrical signal, and transforms the signal into a light pulse output. An optical splitter changes the single light output into a multiple output for serving a maximum number of peripheral units. Similarly, the input port on the tap uses a like optical splitter to recombine signal paths from the peripherals, in driving the coaxial line. Circuitry for incorporation in the tap provides a matching impedance when driving the coaxial line, and a high impedance on the line during the off-time in order to reduce line loading.

REFERENCES:
patent: 3999837 (1976-12-01), Bowen et al.
patent: 4120554 (1978-10-01), Bianchi et al.
patent: 4135202 (1979-01-01), Cutler
patent: 4186996 (1980-02-01), Bowen et al.
patent: 4234968 (1980-11-01), Singh
I. D. Judd et al., "Bidirectional Optical Isolator" IBM Tech. Disclosure Bulletin, vol. 22, No. 4 Sep. 1979 pp. 1671-1672.

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