[jvdh]

Fiber can currently carry wavelengths up to 10Gbps in a standardized way. Standards for 40Gbps and 100Gbps are currently being written (and have been implemented).

These wavelengths can then be multiplexed 8 at a time into carrier groups, which can then be multiplexed 8 at a time into WDM (Wavelength-Division Multiplexing). So one fiber can currently carry 640Gbps, and this will soon go up to 2560Gbps with 40Gbps and probably also 6400Gbps with 100Gbps. I believe that the multiplexing for WDM will be doubled soon, but I'm not sure whether this can carry 816100Gbps wavelengths.

Judging from the amount of ports you see in the picture, the router must do something like that.

Note that WDM switches that can branch out 10Gbps Ethernet will probably cost a fraction of the price of this router and are only about 20U in size.