RE: DWDM Optics cheaper than CWDM Optics?

[Luke Guillory <lguillory () reservetele com>]

Karl,

I've bought at least 20k in optics from them in the last 2 years, from QSFP DAC, QSFP to 10g breakouts and everything 
in between and the only thing to fail was 1 QSFP breakout cable.  A partner of ours uses their DWDM optics and passive 
MUXs while I've used their CWDM with no issues.






Luke Guillory
Network Operations Manager

Tel:    985.536.1212
Fax:    985.536.0300
Email:  lguillory () reservetele com

Reserve Telecommunications
100 RTC Dr
Reserve, LA 70084

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-----Original Message-----
From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of Karl Gerhard
Sent: Tuesday, January 31, 2017 9:17 AM
To: nanog () nanog org
Subject: DWDM Optics cheaper than CWDM Optics?

Hello,

fs.com offers DWDM optics that are cheaper than CWDM optics:
CWDM 80km 10G for 600$ http://www.fs.com/c/cisco-cwdm-sfp-plus-2425?70-80km
DWDM 80km 10G for 420$ http://www.fs.com/c/cisco-dwdm-sfp-plus-2485?70-80km

This is significant.
Is this for real? Has anybody bought their DWDM optics?

Going with DWDM and passive Mux/Demux seems to be cheaper nowadays than going with CWDM.

Regards
Karl