Re: 100GbE beyond 40km

[Joe Freeman <joe () netbyjoe com>]

Open Line Systems can get you to 80K with a 100G DWDM Optic (PAM4) -

I've used a lot of SmartOptics DCP-M40 shelves for this purpose. They also
have transponders that allow you to go from a QSFP28 to CFP to do coherent
100G out to 120Km using the DCP-M40, without a need for regen or extra amps
in line.

The DCP-M40 is a 1RU box. It looks like a deep 40ch DWDM filter but
includes a VAO, EDFA amp, and a WSS I think.

On Fri, Sep 24, 2021 at 4:40 PM Randy Carpenter <rcarpen () network1 net>
wrote:

> How is everyone accomplishing 100GbE at farther than 40km distances?
>
> Juniper is saying it can't be done with anything they offer, except for a
> single CFP-based line card that is EOL.
>
> There are QSFP "ZR" modules from third parties, but I am hesitant to try
> those without there being an equivalent official part.
>
>
> The application is an ISP upgrading from Nx10G, where one of their fiber
> paths is ~35km and the other is ~60km.
>
>
>
> thanks,
> -Randy