[MtnClimber]

Is there fiber that can propagate that bandwidth without so much group delay that the data cannot be recovered after a short distance? It is impressive, but there may be more problems to solve.

[Red Badger]

...without so much group delay...

It's only a matter of time................😉

[ProtectOurFreedom]

I worked at a company that used fiber bragg gratings to deal with group delay. We made a tunable device that could be installed on any length of fiber. It was amazing that we could use a three inch long piece of encoded fiber to replace many kilometers of fiber wound on a spool. The company never made it, though.