Santel Networks tests electronic dispersion compensator prototype, sees significant signal enhancement after PMD impairment

August 13, 2002

1 Min Read

NEWARK, Calif. -- Santel Networks, a provider of high-speed optical networking PHY ICs, today announced that it has performed tests of its proof-of-concept electronic dispersion compensation (EDC) unit that prove that the device compensates for high levels of impairment due to polarization mode dispersion (PMD). PMD is a significant impediment to the deployment of communication service on legacy optical fiber and at high data rates. Along with chromatic dispersion (CD), PMD can limit the distance that optical signals can travel. Santel's results were achieved through recent testing of its unit against the JDS Uniphase Higher Order PMD Emulator."We now have actual measurement data covering a wide range of combinations of first and second order PMD," said Anil Gandhi, Santel Sr. Director of Optical Systems. "The performance we achieved in this test is significant, given the prototype status of our proof-of-concept EDC unit. We expect higher gain from our next product release, which will be sampling soon."Santel is the first company to test an electronic dispersion compensator with the JDS Uniphase Higher Order PMD Emulator. Test measurements demonstrated signal gains in excess of 6db Q at the worst-case combination of 80ps first order and 3800ps(2) second order polarization mode dispersion. A gain of that amount represents a significant opening of the eye pattern, which is an instrumentation-based indicator of signal quality.Santel Networks Inc.

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