Optical waveguides – With optical coupler – Plural
Patent
1993-02-05
1993-09-14
Lee, John D.
Optical waveguides
With optical coupler
Plural
385 27, 385 34, 385 36, 359163, 359174, G02B 628
Patent
active
052456803
ABSTRACT:
Dual transmitter-receiver repeaters are provided on a GRIN rod lens optical bus to boost the optical signals that are transmitted on the bus. Only one of the repeaters is operative as a repeater at a time such that when an activated repeater fails, the other repeater is activated to operate as a repeater to replace the failed one. Repeaters, in alternate embodiments, may be located together on the optical backplane, may be on adjacent cards on the electrical backplane, may be on separate cards located at opposite ends of the optical backplane, or may be located on the same card on the electrical backplane. When the repeaters are located on adjacent cards on the electrical backplane, a prism is secured to the last optical tap prism in the transmitting light path to allow the repeaters to communicate with the information processing receivers and transmitters of the optical bus. When the repeaters are located on opposite ends of the optical backplane, the intermediate optical tap prisms are each coupled to mirrors that allow both repeaters to communicate with the information processing receivers and transmitters of the optical bus.
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Cefarelli F. P., Evans R. T., Optical Circuit Module Connector, IBM Technical Disclosure Bulletin, vol. 21 No. 4, Sep. 1978.
Bowen Glenn W.
Heartney Phan T.
Lee John D.
Starr Mark T.
Unisys Corporation
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