Simultaneous transmission of 20x2 WDM/SCM-QKD and 4 bidirectional classical channels over a PON

We report the transmission of 40 quantum-key channels using WDM/SCM-QKD technology and 4 bidirectional classical channels over a PON. To our knowledge the highest number of quantum key channels simultaneously transmitted that has ever been reported. The quantum signal coexists with classical referen...

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Bibliographic Details
Authors: Mora Almerich, José|||0000-0002-2877-4118, Ruiz Alba Gaya, Antonio, Capmany Francoy, José|||0000-0002-6460-4167, Amaya Ocampo, Waldimar Alexander, Martínez García, Alfonso, Calvo Díaz-Aldagalán, David, García Muñoz, Víctor
Format: article
Publication Date:2012
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/30803
Online Access:https://riunet.upv.es/handle/10251/30803
Access Level:Open access
Keyword:Quantum cryptography
Multiplexing
TEORIA DE LA SEÑAL Y COMUNICACIONES
Description
Summary:We report the transmission of 40 quantum-key channels using WDM/SCM-QKD technology and 4 bidirectional classical channels over a PON. To our knowledge the highest number of quantum key channels simultaneously transmitted that has ever been reported. The quantum signal coexists with classical reference channel which is employed to process the qbits, but it has enough low power to avoid Raman crosstalk and achieving a high number of WDM-QKD channels. The experimental results allow us to determine the minimum rejection ratio required by the filtering devices employed to select each quantum channel and maximize the quantum key rate. These results open the path towards high-count QKD channel transmission over optical fiber infrastructures.

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