[38573] in North American Network Operators' Group
Re: POS OC48 interfaces using different wave length
daemon@ATHENA.MIT.EDU (Wayne Bouchard)
Thu Jun 7 13:13:16 2001
Date: Thu, 7 Jun 2001 10:08:46 -0700
From: Wayne Bouchard <web@typo.org>
To: Simon Lockhart <simonl@rd.bbc.co.uk>
Cc: Vincent Gillet <vgi@opentransit.net>, nanog@nanog.org
Message-ID: <20010607100846.B66724@typo.org>
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In-Reply-To: <23818.991932321@sunf25>; from simonl@rd.bbc.co.uk on Thu, Jun 07, 2001 at 05:45:21PM +0100
Errors-To: owner-nanog-outgoing@merit.edu
So I guess the right answer here is that everyone needs to learn how
to use attenuators propperly...
On Thu, Jun 07, 2001 at 05:45:21PM +0100, Simon Lockhart wrote:
>
> >I am thinking about using different POS interfaces on dark-fibers.
> >
> >On one side, i already have POS-OC48-LR card (Cisco).
> >This card use 1550 nm wave length.
> >
> >We would like to use a POS-OC48-SR (Cisco).
> >This card use 1310 nm wave length.
> >
> >Are 1310 and 1550 optics comptatible ?
>
> You have to have the same wavelength at both ends, otherwise it won't work.
>
> >If yes, i guess that there is impact on the power Budget available. How-Much ?!
>
> LR tends to be 1550nm, because 1550nm has less signal loss over the same
> length of fiber.
>
> Simon
> --
> Simon Lockhart | Tel: +44 (0)1737 839676
> Internet Engineering Manager | Fax: +44 (0)1737 839516
> BBC Internet Services | Email: Simon.Lockhart@bbc.co.uk
> Kingswood Warren,Tadworth,Surrey,UK | URL: http://support.bbc.co.uk/
>
