[NANOG] DWDM More Details

Dale W. Carder dwcarder at wisc.edu
Fri Apr 25 13:19:04 CDT 2008


On Apr 25, 2008, at 12:58 PM, Alex Pilosov wrote:
> On Fri, 25 Apr 2008, John Lee wrote:
>
> I'd be curious to ask reverse question, did anyone *have* real  
> problems
> deploying duct tape systems, or power jitter chromatic dispersion is
> vendor mumbo jumbo designed to make you buy their gear?
> (within the distance limits spec'd, 80km dwdm etc)

What I think you are referring to is known as the
Gordon-Haus effect.  This is related to the length
of a strand to the 3rd power, so I would guess for
modern optics / filters, it is a non-issue for 80k.

Dale






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