TITLE

CMOS driver circuits make optical card-to-card datacomms practical

AUTHOR(S)
Yeates, Harry
PUB. DATE
June 2006
SOURCE
Electronics Weekly;6/21/2006, Issue 2246, p10
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
This article reports that International Business Machines Corp. is developing the means to use CMOS transmitter macros for directly modulating laser light sources in card-to-card optical links. The technology, already demonstrated driving vertical cavity surface emitting lasers (VCSEL) in a 5Gbit/s serial connection, is intended to reduce the power, area, and cost of optical communications, and make them viable for high-density datacomms applications. VCSELs offer a number of advantages for the optical source, alongside being driven straight off the chip. A key problem in using large numbers of densely distributed optical channels is ensuring accurate alignment of the waveguide with the source.
ACCESSION #
21604698

 

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