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Optical Fiber Communication Conference

Coexistence of Commercial DV-QKD with High-Capacity Super C+L-band Transmission in Amplified ROADM-based Links and Frequency Allocation Strategies

Antonio Melgar, José Manuel Rivas-Moscoso, J. F. Dynes, Andrew J. Shields, Sourabh Khandelwal, Rafael Canto, Jesús Folgueira

Published Jan 1, 2026• 0 citations
Publisher

Abstract

We demonstrate the coexistence of an O-band DV-QKD channel with 11.7 THz C+L-band transmission at a launch power of 22.4 dBm over 50 km of fiber. L-band channels do not degrade DV-QKD performance, and two C-band frequency allocation strategies are evaluated to optimize system performance.
DOI
10.1364/ofc.2026.w3k.4

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