[nsp] Cisco CWDM GBICs?

Mikael Abrahamsson swmike at swm.pp.se
Tue Jul 8 10:18:36 EDT 2003


On Tue, 8 Jul 2003, Deepak Jain wrote:

> Does anyone have the optical budget for Cisco CWDM GBICs? I looked and
> couldn't find anything on CCO, just some vague reference to <30km being "too
> close w/o attenuation".

They do approx +3 to +6 output power and have overload of -3 on the input, 
with a receiver sensitivity of at least -29dB.

(This is from the Finisar FTR1619-55 specs that I believe Cisco uses).

I would suggest having at least 10dB dampening on the fiber to make 
sure you're not getting overload.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se



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