The article you posted is light on details. But as I read it, the research was a multi-channel approach on normal fiber. So in that case, it would be a question

The article you posted is light on details. But as I read it, the research was a multi-channel approach on normal fiber. So in that case, it would be a question of upgrading the equipment connected on either end (though you'd also probably need short hops between equipment to keep SNR high in such a scheme.)