Gas turbines produce a lot of power, as in 1MW or more per turbine. Is this a backup system, or is the facility using so much power that they literally need their own electric plant to sustain it?

I totally get how this would be useful in imaging systems, but I’m not understanding how it applies to communications.

The only thing I can think is perhaps carrying more modes through a multimode fiber? I never understood amplifier bandwidth to be a limiting factor, though.

What communications systems use a wide bandwidth of light (300nm is a LOT) into a single amplifier?