nanog mailing list archives
Re: Passive Wave Primer
From: Brandon Martin <lists.nanog () monmotha net>
Date: Tue, 13 Oct 2020 16:15:42 -0400
On 10/13/20 3:35 PM, Tony Wicks wrote:
We sell some wavelengths on passive CWDM/DWDM path's between Datacentres (less than 80Km) to customers to spread the cost of leasing the dark fibre. But yes, as far as long distance (apart from bespoke offerings) I'm yet to see a productised alien wave service. If you are spending all that money on OTN kit the extra cost of the transponders is not really significant I suppose.
It's in some providers' catalogs (amazingly) but they seem loathe to actually sell it when asked. Even then, you're spot on with the description of "bespoke". I saw Zayo's product description sheet for it, and, while it did seem to check the boxes I'd expect, it was also quite expectedly very complex (they also wouldn't actually sell it to me).
At less than 80km, you don't have to worry so much about balancing light levels, etc. as you can usually just throw things straight into a mux/demux on each end and rely on the power budget of the transceiver itself, so that makes sense for cheap DCI.
-- Brandon Martin
Current thread:
- Passive Wave Primer Rod Beck (Oct 13)
- Re: Passive Wave Primer James Jun (Oct 13)
- Re: Passive Wave Primer TJ Trout (Oct 13)
- RE: Passive Wave Primer Tony Wicks (Oct 13)
- Re: Passive Wave Primer TJ Trout (Oct 13)
- Re: Passive Wave Primer TJ Trout (Oct 13)
- Re: Passive Wave Primer James Jun (Oct 13)
- Re: Passive Wave Primer Brandon Martin (Oct 13)
- RE: Passive Wave Primer Tony Wicks (Oct 13)
- Re: Passive Wave Primer Martijn Schmidt via NANOG (Oct 13)
- Re: Passive Wave Primer Brandon Martin (Oct 13)
- Re: Passive Wave Primer Mike Hammett (Oct 13)
- Re: Passive Wave Primer Brandon Martin (Oct 13)
- Re: Passive Wave Primer Dave Cohen (Oct 13)
- RE: Passive Wave Primer Tony Wicks (Oct 13)