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Tuesday,
January 14th, 2003
"Electromagnetic
Emission from "Dielectric" Optical Fiber Cables" Details:
- The
conventional wisdom is that optical fiber is dielectric, and thus does
not radiate RF emissions.
In practice, optical fiber cable connectors have non-negligible
amounts of conductive material, for example a ferrule, spring, and
crimp ring. As data rates have increased beyond 1 gigabit/second
(Gbps), equipment with supposedly "RF tight" enclosures exhibited high
levels of RF emissions, failing
to meet FCC/European electromagnetic compliance (EMC) requirements. It
is hypothesized that these small metallic bits can re-radiate RF
emissions due to capacitive coupling, and a model is proposed. Data is
presented to support this mechanism for RF emission, and corrective
measures are suggested to reduce these emissions.
: :
WE HAVE A NEW MEETING LOCATION... HERE IS THE
MAP!
THE SOCIAL GATHERING
WILL BEGIN AT 5:30pm AND THE MEETING WILL BEGIN AT 7:00pm
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