> On Mon, May 14, 2018 at 6:10 PM, Chuck McCown < ch...@wbmfg.com > wrote:

>> Why could you not use DWDM SFPs into a CWDM mux if you spaced them out? They 
>> are
>> about $150 cheaper.

You can.. if designed properly... 
As a matter of fact, there is a valid way of stacking DWDM mux behind a CWDM 
mux ! 

The main thing one has to keep in mind is that .. The Tx side of the Optics 
have the tuned filter for that wavelength 
The RX side of the same Optics does not.. it is rather a 'broadband' filter... 

That is the reason why the CWDM/DWDM duplex channels can be muxed over a single 
fiber ... 

Faisal Imtiaz 
Snappy Internet & Telecom 
http://www.snappytelecom.net 

Tel: 305 663 5518 x 232 

Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net 

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