Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1978-09-05
1980-11-18
Ruggiero, Joseph F.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
350 9616, H04B 900, G02B 5172
Patent
active
042349699
ABSTRACT:
A data processing system having a plurality of stations and an optical transmission bus linking the stations. The bus includes two transmission lines carrying optical signals in opposite directions so that two stations may communicate simultaneously. A passive optical coupler module couples each station to the two transmission lines. The optical coupler module includes a silicon substrate having suitably formed grooves and recesses for mounting single fiber waveguide segments, tapered waveguides, each for directing the optical signal on either of two waveguide segments to a single optical path, and optical beam splitters, each for splitting a portion of the optical signal on a waveguide segment for each of two other waveguide segments.
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patent: 4061577 (1977-12-01), Bell
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patent: 4107518 (1978-08-01), McMahon
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Rawson and Metcalfe--"Fibernet:Multimode Optical Fibers for Local Computer Networks"--IEEE Transactions on Communications, vol. Com-26, No. 7, Jul. 1978--pp. 983-990.
Cavender J. T.
Dugas Edward
Jewett Stephen F.
NCR Corporation
Ruggiero Joseph F.
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