[70794] in North American Network Operators' Group
Re: Cisco HFR
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Wed May 26 02:27:49 2004
Date: Wed, 26 May 2004 08:27:09 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: nanog@merit.edu
In-Reply-To: <CMM.0.90.0.1085548323.roll@Laptoy.Stupi.SE>
Errors-To: owner-nanog-outgoing@merit.edu
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
