Impact of spontaneous anti-Stokes Raman scattering on QKD+DWDM networking
P. Toliver, Robert J. Runser, Thomas E. Chapuran, Scott R. McNown, Matthew S. Goodman, J. Jackel, Richard Hughes, Charles G. Peterson, Kevin P. McCabe, J. E. Nordholt, K. Tyagi, Philip A. Hiskett, N. Dallman · 2004
This study presents an experimental demonstration of 1310 nm QKD multiplexing and transmission with amplified DWDM signals over a shared 10 km fiber span. This work identifies anti-Stokes Raman scattering generated during fiber propagation as the primary contributor of crosstalk noise at the QKD receiver. New results are presented on the characterization of spontaneous anti-Stokes Raman noise (SASRN), generated within the fiber by the high-power DWDM signals, and implications for QKD+DWDM networking architectures are also discussed.