1 petabit per second is already a reality, friend
At the European conference and exhibition optical communication (ECOC 2012), which closed on 20 September (2012) in Amsterdam, the Japanese company showed a report on the development of technology of data transmission via fiber optics with a speed of 1 petabit per second.
The new technology was developed and tested jointly by several companies and universities: Nippon Telegraph and Telephone Corporation (NTT), Fujikura Ltd., Hokkaido University and Danish technical University. They managed to transmit data at a speed of 1 petabit (1000 terabit) per second by cable with 12 fibers, that allows to speak about a new world record data transmission over a single fiber. The distance between the sending and receiving devices made up 52.4 per kilometer.
Of course, the other, you should not expect the emergence of networks with similar speed tomorrow, but this technology could form the basis of new generation networks in the near future, as the need to transfer large amounts of information is constantly growing.