FIELD: optical engineering.
SUBSTANCE: photonic quantum communication devices. The technical result is achieved through the joint use of dense and coarse frequency multiplexing methods, the transmission of a quantum channel at a wavelength of 1310±10 nm, as well as a combination of using a controlled attenuator in the sender unit and using an optical amplifier in the receiver unit.
EFFECT: reducing the effect of noise during the joint propagation of a quantum and classical signal, reducing the influence of nonlinear effects on the joint propagation of classical and quantum signals and, as a result, increasing the output of a quantum channel.
1 cl, 1 dwg
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