[70842] in North American Network Operators' Group
Re: Cisco HFR
daemon@ATHENA.MIT.EDU (Henry Linneweh)
Thu May 27 17:22:11 2004
Date: Thu, 27 May 2004 14:21:35 -0700 (PDT)
From: Henry Linneweh <hrlinneweh@sbcglobal.net>
To: Mikael Abrahamsson <swmike@swm.pp.se>, nanog@merit.edu
In-Reply-To: <Pine.LNX.4.44.0405260820590.22964-100000@uplift.swm.pp.se>
Errors-To: owner-nanog-outgoing@merit.edu
I'm curious here, don't photons cause a lot of
reflective jitter because of their large size ??
-henry
--- Mikael Abrahamsson <swmike@swm.pp.se> wrote:
>
> On Tue, 25 May 2004, Peter Lothberg wrote:
>
> > You can run the same distance as you do with your
> 10G system.
> > It;s mostly driven by dispersion, crosstalk and
> snr if you have many
> > amps. Milage varies with span design, but is not
> much different than
> > 10G (as the symbol speed is till 10G).
>
> Ah, so it's actually 4 different wavelengths within
> the ITU-grid
> alottment of one single 10G wave?
>
> > > Can 10G optical amplifiers be used?
> >
> > Yepp..
>
> How does the fact that you need to amplify four
> times the photons in the
> same wavelength space affect things? Just needs to
> be taken into
> consideration when calculating the amount/number of
> amplification/amplifiers?
>
> Is this something in production or alpha/beta test
> with the DWDM
> manufacturer?
>
> --
> Mikael Abrahamsson email: swmike@swm.pp.se
>
