Andy, if you are talking about fiber I think it's called "polarization mode dispersion" The measure of transmission time as a function of the orientation of the "E" field of light reletive to the fiber.
Causes...dimensional irregularites....non-equal index of refraction.....The glass may have a demensional preference in it's atomic structure that causes n to be greater in one direction or another.........energy exchanges between polerization modes (1550 and 1310)......fiber connectors, splices, all have a net effect called.....PMD
Channel line-up and frequency use will not cause PMD.
> Does any one know the maximum PMD "Phase Mode Dispersion" on a fiber optic link for a HFC system carrying: 60, 80 and 110 Analog signal.
> Does the PMD value changes with the adding of more channel or doest it stay the same?
>
> Thank you for the answer.
>
> Andy Lamarre
>
Re: PMD on a HFC system
Member #: 6608
Registered: 1996-2001
Posted:
101
Name:
Darryl Thomas
Name:
Darryl Thomas
Occupation:
Sweep Supervisor
Location:
Orlando, Florida
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