Coherent CWDM 40G QSFP

Wed Oct 19 21:52:17 UTC 2016

True 40 gigs is rare period. Most of the time it is bandwidth limiting on a 100 gig wave.

________________________________
From: NANOG <nanog-bounces at nanog.org> on behalf of Mike Hammett <nanog at ics-il.net>
Sent: Wednesday, October 19, 2016 11:46 PM
To: Tim Durack
Cc: nanog list
Subject: Re: Coherent CWDM 40G QSFP

Apparently I just remembered the big transport platforms using coherent 40G and 100G and assumed there was a cheap variant, but there isn't.

-----
Mike Hammett
Intelligent Computing Solutions

Midwest Internet Exchange

The Brothers WISP

----- Original Message -----

From: "Tim Durack" <tdurack at gmail.com>
To: "Mike Hammett" <nanog at ics-il.net>, "nanog list" <nanog at nanog.org>
Sent: Tuesday, October 18, 2016 9:28:02 PM
Subject: Re: Coherent CWDM 40G QSFP

Not aware of ACO/DCO in QSFP form factor. Inphi is doing 100G QSFP28 PAM4 DWDM for MS. Probably the best you will see for a while.

On Tue, Oct 18, 2016 at 4:50 PM Mike Hammett < nanog at ics-il.net > wrote:

Does anyone make a coherent CWDM 40G QSFP? I thought so, but the first couple places I checked, I struck out at. This would be for a passive mux\MROADM.

-----
Mike Hammett
Intelligent Computing Solutions

Midwest Internet Exchange

The Brothers WISP