Re: Coherent CWDM 40G QSFP

[Rod Beck <rod.beck () unitedcablecompany com>]

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


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From: NANOG <nanog-bounces () nanog org> on behalf of Mike Hammett <nanog () 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 () gmail com>
To: "Mike Hammett" <nanog () ics-il net>, "nanog list" <nanog () 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 () 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