[107360] in North American Network Operators' Group
RE: 10GE CWDM
daemon@ATHENA.MIT.EDU (Michael K. Smith - Adhost)
Tue Sep 2 11:11:26 2008
Date: Tue, 2 Sep 2008 08:10:55 -0700
In-Reply-To: <Pine.LNX.4.44.0809020001520.7900-100000@bawx.pilosoft.com>
From: "Michael K. Smith - Adhost" <mksmith@adhost.com>
To: "Alex Pilosov" <alex@pilosoft.com>, "Robert Boyle" <robert@tellurian.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
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Hello Alex:
> Depending how cheap and ghetto you want to get, there's also possibility
> of doing WDM on 1310/1300. I have custom-manufactured splitters filtering
> 1307nm +-2nm - and any given LR XFP [*1] will be either within that band
> or outside [*2]. Test a bunch of them, split them into two groups, use on
> the "tested" wavelength. Bunch of friends&family are using this technology
> in production. This gives you an ability to do 20G with very cheap optics.
>=20
>=20
> [*1] Except ones with very temperature dependent wavelength - mark them as
> "warms up to 1300" and use if you don't care that your links will take
> about 5 minutes to "warm up" and come up. :)
>=20
> [*2] Any LX4 Xenpak would be "outside" of the band as well, and you can
> use LX4 concurrently with LR.
>=20
> There are some more ghetto fabulous things you can do, described in
> http://www.nanog.org/mtg-0610/presenter-pdfs/pilosov.pdf ;)
>=20
> -alex
>=20
Do you have any issues with four wave mixing or other crosstalk issues or d=
o you account for this in your channel plan?
Regards,
Mike
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