[38567] in North American Network Operators' Group
Re: POS OC48 interfaces using different wave length
daemon@ATHENA.MIT.EDU (Simon Lockhart)
Thu Jun 7 12:50:07 2001
To: Vincent Gillet <vgi@opentransit.net>
Cc: nanog@nanog.org
In-Reply-To: Your message of "Thu, 07 Jun 2001 18:39:06 +0200."
<20010607183906.A1155@opentransit.net>
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Date: Thu, 07 Jun 2001 17:45:21 +0100
Message-Id: <23818.991932321@sunf25>
From: Simon Lockhart <simonl@rd.bbc.co.uk>
Errors-To: owner-nanog-outgoing@merit.edu
>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
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