[c-nsp] WDM (wave division multiplexing) fiber question

[Nick Hilliard]

On 01/10/2015 22:01, Gert Doering wrote:
> If it's 1310, it's not WDM.

Almost certainly, yes.   1310nm CWDM exists, but it's most unlikely that
this would be the customer side presentation.  That would be outright weird.

> (It could be a connection *to* the providers WDM system, which changes
> the wavelength to "the proper DWDM wavelength in use for you", but with
> this kind of setup, all the *DM stuff does not need to concern you.)

This would be the standard way of doing it: the provider will give 1310nm
hand-off and then use a 1G / 10G transponder to handle the wan side of the
link.

Nick