Abstract
A Y-00 transceiver for quantum encryption communication systems employing the
Yuen-2000 protocol based on optical intensity modulation, which utilizes the quantum
effect of coherent light has been developed and tested in field experiments. These
experiments involved repeated transmission over a 192-km line on an existing commercial
optical communication network with a bit-rate of 2.5 Gb/s based on STM-16 or OC-48. In
addition, the affinity of the developed system for existing networks and communication
protocols (Gigabit Ethernet and Fibre Channel) was examined. Subsequently, three optical
fiber amplifiers were inserted as intermediate repeaters to give a non-repeated
transmission distance of 48 km. The bit error rate after 192-km transmission was
10<sup>-12</sup> with an optical power of -19.4 dBm at the receiving end. In addition, it
was confirmed that if an eavesdropper increased the received optical power, the bit
error rate converged to about 5 x 10<sup>-1</sup> and the identification of the true
signal levels was virtually impracticable. These experimental results confirmed the high
affinity between the Y-00 system and existing optical commercial networks and protocols
used in the fundamental experiments. It was also apparent that the realization of highly
secure optical communication networks was feasible. The performance of the Y-00
transceiver can be expected to improve to meet the strictest security evaluation.
© 2010 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription