You’re doing it right. Use DWDM or CWDM depending on your needs. There are advantages and disadvantages to using two fibers. You can use two fibers and BiDi to create a ring that can take a single fiber cut anywhere without losing connectivity. We have done that in a number of locations.
Equipment costs for the WDM gear is higher with BiDi versus two fibers since you need “east & west” gear and two WDM channels for each link. We recently did a project with 16 sites fed at 10Gb each on a 2 fiber IRU using SolidOptics DWDM gear. Price was ~$35k with standard optics and ~$65k with a Bidi design. The cost difference was primarily due to the expense of the additional channels on the DWDM mixes, East & West Ports, and having to have a dual bidirectional EDFA amplifier. While the redundancy of having the ability to run in a single fiber cut situation would have been nice, it wasn’t worth the extra cost. I don’t expect to need this IRU for more than a couple of years until we have more of our own fiber along the route. Fiber cuts are not all that common in the first place, and the odds of having one cut but not the other when they are in the same cable are not that good. Mark > On Jan 25, 2022, at 4:43 PM, Carl Peterson <cpeter...@portnetworks.com> wrote: > > We are leasing a few new strands of dark to a couple locations. On our other > paths we have just Done BiDi for our ring or payload and used another for our > routed/management network. For these strands, I'm thinking of doing passive > WDM. > > Any benefit to DWDM vs CWDM if you aren't expecting to scale it? Why would > you use two strands vs one strand? We generally use one strand for > everything, either BiDi or GPON so my brain just sort of assumes that. What > am I missing? > > -- > https://www.fs.com/products/43711.html?attribute=4364&id=297095 > <https://www.fs.com/products/43711.html?attribute=4364&id=297095> > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
