Thanks - we don't really understand the intricacies either. This is our first adventure in this area.
The distances are quite large (800+ Km). It's a dark wave service, though we don't have to worry about anything in the middle, just the 2 end points. I'm told Adva / Adtran will be releasing a ZR+ 0dBm QSFP28 that would (or should) work in Q2 2024, but I'm looking for other options. I did check out FS.com, but they're telling me the only option they have available uses a 200Gig CFP2 and 2 100gig QSFP28s. Any idea where else we might look? We'd be happy to engage someone to help us design a solution, we're just not sure where to turn. Shawn On Fri, Jan 19, 2024 at 1:25 PM Hunter Fuller <[email protected]> wrote: > I know when we are talking about DWDM my usual expectation these days > is to use a "0km optic" (aka one that is meant to launch just far > enough to make it into an amp)... so one of those (from anyone, e.g. > fs.com, whatever) followed by an amp might be doable? I would advise > you to contract someone to work that out though (I myself don't even > fully understand the intricacies). > > the point of the 0km optic is that it fits in QSFP+ generally. It's a > lot to ask, to get a precisely tuned DWDM wave coming out of a lil > QSFP+ at ZR levels. > > The other option of course being to send it LR and then use a > transponder closer to the DWDM gear, as Nick suggested. > > -- > Hunter Fuller (they) > Router Jockey > VBH M-1C > +1 256 824 5331 > > Office of Information Technology > The University of Alabama in Huntsville > Network Engineering > > On Fri, Jan 19, 2024 at 9:07 AM Nick Hilliard via cisco-nsp > <[email protected]> wrote: > > > > Shawn L via cisco-nsp wrote on 19/01/2024 14:58: > > > The pluggable optic must be DWDM 1530 to 1563 nm with QPSK modulation > that > > > fits 50Ghz (~31 to 35Gbaud) and a launch power of ZR+ 0dBm. The > customer > > > channel should have Rx: Max <-10 dBm/Ch and Tx: Min: >–5 dBm/Ch to > Max: <+ > > > 6.5dBm/Ch in order to meet the GOSNR margin of 2.5dBm or more. > > > > right, so DWDM alien wave requirement then. That's very non-portable and > > kit specific. > > > > Depending on the application, you might be better off ditching the > > requirements that they're imposing and simply using 100G transponders > > (i.e. 100G as a service). Or something like the smartoptics open line > > system with PAM4 QSFP28 transceivers. > > > > It really depends on what's between you and the other end. D/F has > > simple options open for single 100G. If you're connecting into something > > more complicated, it can get messy and expensive. > > > > Nick > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
