nanog mailing list archives

Re: POS OC48 interfaces using different wave length


From: Wayne Bouchard <web () typo org>
Date: Thu, 7 Jun 2001 10:08:46 -0700


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 
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