Nippon Telegraph and Telephone (NTT) has demonstrated the ultra-large capacity optical transmission of 14 terabits per second, over a single 160km long optical fibre, claimed to be the world's largest transmission capacity.
Link.
There is also an interesting bit at the end:
NTT aims to construct a 10Tbps-class large capacity core optical network to promote the realisation of a long-distance transmission system that supports 100Gbps high-speed channels.
Hooray for high speed networks!
irmongoose