DWDM and EDFA and DCM

[rodrigo at 1telecom.com.br (Rodrigo Augusto)]

Buy 80km sfp+ dwdm modules? c21 and c51.
On this scenario a don?t have a EDFA, only put these sfp+ and I have link
on other side( 60km) but I have a -19dbm and other side I have -21dbm( ddm
sfp+ output).. I think I have a better signal than this? because I use
80km sfp+ and my distance is 60km? can I  have a chromatic dispersion? I
think to use a EDFA, but i?m not sure this? if I have a chromatic
dispersion I have to use a DCM not a ADFA or a booster?
Right?!
 

Rodrigo Augusto
Gestor de T.I. Grupo Connectoway
http://www.connectoway.com.br <http://www.connectoway.com.br/>
http://www.1telecom.com.br <http://www.1telecom.com.br/>
* rodrigo at connectoway.com.br
( (81) 3497-6060
( (81) 8184-3646
( INOC-DBA 52965*100




On 22/04/15 15:33, "Mikael Abrahamsson" <swmike at swm.pp.se> wrote:

>On Wed, 22 Apr 2015, Rodrigo Augusto wrote:
>
>> Does anyone have some experience to use dwdm monofiber mux/demux ( ex.
>> fiberstore ) about 68km using a ADFA ? Have I to use a DCM( for
>>chromatic
>> dispersion ) on this distance? When I have to use a DCM ?
>
>You have to use DCM when the chromatic dispersion caused by your distance
>exceeds what your receiver optical module can handle.
>
>So the answer is "it depends". If you're using 1GBASE-DWDM optics then
>you'll be fine, if you use 10GBASE DWDM optics then it depends on the
>distance they were designed to handle, if you buy the 40km ones then you
>should have DCM.
>
>-- 
>Mikael Abrahamsson    email: swmike at swm.pp.se