首页|Quantum and Data Signals in a Single Fiber—Multiplexing by Smart Use of High-Grade Filters

Quantum and Data Signals in a Single Fiber—Multiplexing by Smart Use of High-Grade Filters

扫码查看
原文链接
  • NETL
  • NSTL
  • IEEE
In this letter, we present the latest findings in coexistence of two rather different classes of optical signals in one fiber – classical data signals and quantum signals. The most significant and notable difference between the two is the optical power, which is several orders (7 or more) of magnitude distinct from each other. There are several approaches to address this issue – in this letter, at a glance, the realistic and practical approach, which relies on the selection of high-grade optical filters, was chosen. Rigorous, however affordable, optical filtering is required to avoid any possible crosstalk, not only from the classical data signals but also from the spontaneous nonlinear Raman scattering effect. In our experimental verification, it has been demonstrated that the selection of high-grade transmission components is a crucial element in the success of multiplexing strong and weak optical signals in a single fiber. In real-world applications, this approach significantly reduces infrastructure costs by eliminating the need for additional fiber.

Optical filtersRaman scatteringOptical scatteringOptical attenuatorsOptical fiber devicesOptical fiber networksOptical crosstalkNonlinear opticsMultiplexingFiber nonlinear optics

Jan Radil、Martin Šlapák、Rudolf Vohnout、Jaromír Šíma、Tomáš Novák、Ondřej Havliš、Josef Vojtěch

展开 >

Department of Optical Networks, CESNET a.l.e., Prague, Czech Republic|Department of Computer Science, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic

Department of Optical Networks, CESNET a.l.e., Prague, Czech Republic

Department of Optical Networks, CESNET a.l.e., Prague, Czech Republic|Department of Laser Physics and Photonics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic

2025

10.1109/LCOMM.2025.3545315

IEEE communications letters

IEEE communications letters

ISSN：
年,卷(期)：2025.29(5)
  • 18