Technically speaking, there is no magic to CWDM or DWDM solution.... You can go with a 'canned' solution from folks such as Ciena/Cisco/etc etc etc or you can create your own with the required pieces, in the simplest form all one needs is couple of passive Mux/Demux units, colored optics and a Switch/Media Converters (ones that you can read the light levels from).
Depending on length of the fiber, you may or may not need anything more (such as regen units, amps etc). If you are going to design a solution using passive Mux/Demux do pay attention to the insertion loss figures on the different products. In my opinion, doing a CWDM/DWDM design calculations for a WiSP should be fairly easy to understand. The benefit in designing your own solution, you gain a much better understanding on what you can do and what you cannot do... (e.g. do you know that you can potentially stack a DWDM solution right behind a CWDM passive mux ? .... and you will end up with a much more flexible solution, at a fraction of the cost of a comparable canned solution. We did a CWDM (8ch) passive solution, along with colored optics, 10g Switches between 4 different Data Center, for under $12k a couple of years back. They way we optimized our design for initial cost, while maintaining the ability to expand my adding another CWDM or DWDM mux in the future. (We went with gear from Fiberstore, we did consult them with our solution, and they offered us Mux/DeMux units with even lower insertion loss that those listed on their website for a slight premium, which in our case was well worth it) Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net ----- Original Message ----- > From: "Justin Wilson" <li...@mtin.net> > To: af@afmug.com > Sent: Sunday, August 14, 2016 10:52:02 AM > Subject: Re: [AFMUG] DWDM Gear > Are you looking for active or passive? > > We just replaced a failing Ciena Mux with an 18 channel passive mux for a data > center client. Ours was CWDM, but they make a DWDM version. Total cost was > under 5 grand, including spares. Ciena wanted 24k to update the service > contract, update software, and troubleshoot an alarm state. > > Justin Wilson > j...@mtin.net > > --- > http://www.mtin.net Owner/CEO > xISP Solutions- Consulting – Data Centers - Bandwidth > > http://www.midwest-ix.com COO/Chairman > Internet Exchange - Peering - Distributed Fabric > >> On Aug 14, 2016, at 10:41 AM, Chuck McCown <ch...@wbmfg.com> wrote: >> >> I have always used Cyan. >> >> -----Original Message----- From: Paul Stewart >> Sent: Sunday, August 14, 2016 7:30 AM >> To: Animal Farm >> Subject: [AFMUG] DWDM Gear >> >> For those folks doing DWDM on fiber, whats your preferred equipment and why? >> >> We currently use BTI equipment which works extremely well but it’s priced in >> the >> same ballpark as Ciena, Nortel, Cisco etc … quite expensive to deploy. Hoping >> to find something more economical but just as reliable? By reliable I mean >> that it’s deployed for years without having to do anything service impacting >> to >> it. For this particular deployment I’m thinking of, ROADM isn’t important >> neither. Prefer active solution vs passive. CWDM would even be ok at this >> point to consider … >> >> Basically looking at ways to cut down on 10G fibers between two physical >> locations (the fiber is leased) >> >> thanks, >> Paul
