339 Gbps: High-energy physicists smash records for network data transfer

I don't understand what is so special about that. Optical telecom equipment that carriers such as Verizon or AT&T use can aggregate Terabits per second through a link using DWDM technology.

The state of the art currently in deployment is now 100 Gbps using only ONE wavelength.

Of course the optical links used by carriers mux/demux traffic from many sources into many destinations. Presumably the feat in the article is from one datacenter to another. Still, if they're just buying the same equipment that telecom operators use, I don't see what the big deal is?