The article "Chaos-based communications at high bit rates using commercial fiber-optic links" by Apostolos Argyris et al. reports a successful demonstration of high-speed long-distance communication using chaos synchronization over a commercial fiber-optic channel. The study uses an optical carrier generated by a chaotic laser to encode messages for transmission over 120 km of installed optical fiber in Athens, Greece. The message is decoded via synchronization with a second laser that performs chaotic filtering. Transmission rates in the gigabit/s range are achieved, with bit-error rates below \(10^{-7}\). The system employs matched pairs of semiconductor lasers as chaotic emitters and receivers, along with off-the-shelf fiber-optic telecommunication components. The results demonstrate that information can be transmitted at high bit rates using deterministic chaos, which is robust to perturbations and channel disturbances. The study also highlights the potential of chaotic communication systems for enhanced security and privacy, as well as their compatibility with wavelength division multiplexing (WDM).The article "Chaos-based communications at high bit rates using commercial fiber-optic links" by Apostolos Argyris et al. reports a successful demonstration of high-speed long-distance communication using chaos synchronization over a commercial fiber-optic channel. The study uses an optical carrier generated by a chaotic laser to encode messages for transmission over 120 km of installed optical fiber in Athens, Greece. The message is decoded via synchronization with a second laser that performs chaotic filtering. Transmission rates in the gigabit/s range are achieved, with bit-error rates below \(10^{-7}\). The system employs matched pairs of semiconductor lasers as chaotic emitters and receivers, along with off-the-shelf fiber-optic telecommunication components. The results demonstrate that information can be transmitted at high bit rates using deterministic chaos, which is robust to perturbations and channel disturbances. The study also highlights the potential of chaotic communication systems for enhanced security and privacy, as well as their compatibility with wavelength division multiplexing (WDM).