Integration of QKD Channels to Classical High-speed Optical Communication Networks

Gerhátné Udvary, Eszter (2023) Integration of QKD Channels to Classical High-speed Optical Communication Networks. INFOCOMMUNICATIONS JOURNAL, 15 (4). pp. 2-9. ISSN 2061-2079

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Abstract

Integrating Quantum Key Distribution service with classical high-speed optical data transmission using a dense wavelength division multiplexing technique in a fiber is a cost-effective solution to improve the network's security. In this multichannel system, several noise sources degrade the quality of the quantum channel. The dominant degradation effect is determined by modeling in different cases. Optical filtering cannot decrease spontaneous Raman Scattering caused by the classical optical channels. So this nonlinear optical effect is investigated in detail with different system parameter setups. The optimal channel allocation and the required bandgap between the classical and quantum channels are determined.

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