Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1991-04-19
1993-03-02
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
2502081, 25022731, 359163, 385 14, G02B 2700, G02B 600
Patent
active
051912198
ABSTRACT:
An information processing system uses a planar optical waveguide as a shared medium for a plurality of its subsystems. To this end, each subsystem is provided with a light emitting diode to broadcast information pulses into the shared medium and a photodetector for receiving the information pulses broadcast by the light emitting diodes. This thereby reduces the need for conductive interconnections between subsystems. Additionally, a number of planar optical waveguides can be stacked on a support and different compositions of subsystems communicate with one another by using different waveguides of the stack. The system can be adapted for time-division, space-division and frequency division multiplexing.
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patent: 5061027 (1991-10-01), Richard
Balliet et al., "Optical Transmission System for Interconnecting Electronic Units", IBM Tech. Dis. Bull. vol. 26, No. 24, Sep. 1983, pp. 1793-1796.
Messinger Michael
NEC Research Institute Inc.
Nelms David C.
Torsiglieri Arthur J.
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