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Static vs. Dynamic Regenerator Directionality Assignment in OCX Switches: Network Simulation and Performance
Published
Author(s)
Kotikalapudi Sriram, David W. Griffith, G Di lorenzo, Oliver Borchert, Nada T. Golmie
Abstract
We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the bit-stream, generation of random numbers and processing of the sifting algorithm are all handled by a pair of custom data handling circuit boards. As a complete system using a clock rate of 1.25 Gbit/s, it produces sifted keys at a rate of 1.1 Mb/s with an error rate lower than 1.3% while operating at a transmission rate of 312.5 Mbit/s and a mean photon number 5 = 0.1. With a number of proposed improvements this system has a potential for a higher key rate without an elevated error rate.
Sriram, K.
, Griffith, D.
, Di lorenzo, G.
, Borchert, O.
and Golmie, N.
(2005),
Static vs. Dynamic Regenerator Directionality Assignment in OCX Switches: Network Simulation and Performance, Broadband Networks 2005 Broadband Optical Networking symposium, , USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150133
(Accessed October 2, 2025)