100G-LR1 (DR/FR)

Tue Apr 4 15:44:09 UTC 2023

> On Apr 3, 2023, at 4:54 PM, Tony Wicks <tony at wicks.co.nz> wrote:
> 
> I have been using the  QSFP-100G-CWDM4 2k optics for within rack/DC for a couple of years now. They are about the same price as SR optics but allow the use of simple duplex single mode patches without blasting 10K optics at each other over a 2M patch. Never had one fail or any compatibility issues. 

We saw some issues with the CWDM4 optics failing that caused us to make some changes in how we used those optics.  I’ve also heard rumors some of the CWDM4 optics would go 10x the published spec, but I have not tested that myself.

- Jared