IBM Corp. described what it claims is the world's first optically-connected circuit board on Thursday (Feb. 28) at the Optical Fiber Communication Conference in San Diego. Researchers at IBM's Thomas J. Watson Research Center (Yorktown Heights, N.Y.) said the 300-Gbits/sec optical interconnect was lithographically patterned atop an otherwise conventional pc-board. Gallium arsenide transceivers were used to convert normal electrical signals into light.
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