This test leverages TIM's existing long-haul network, based on Nokia's CDC-F ROADM architecture, and demonstrates the ability to achieve transmission speeds of 600G per wavelength using Nokia's PSE-Vs super coherent optics. Operating with 100GHz WDM channels to maximize network capacity, this test sets a spectral efficiency record of 6.0 bits/sec/Hz on TIM's strategic long-haul routes.

The test was conducted on a long-distance route connecting TIM's live SMF/LEAF mixed-fiber network spanning Italy, using Nokia's compact 1830 PSI-M modular disaggregated transport system. TIM and Nokia demonstrated error-free performance of 600 Gb/s on a 1008 km link from Turin to Rome, comprising 18 fiber segments and passing through five ROADM nodes, and 400 Gb/s on a 2140 km link from Turin to Catania (Sicily), comprising 37 fiber segments and 12 ROADM nodes.
Nokia's PSE-V is the industry's most advanced digital coherent optics (DCO) family, powering Nokia's next generation of high-performance, high-capacity transponders, optical packet switches, compact modular disaggregated platforms, and submarine terminals. Supercoherent PSE-V (PSE-Vs) implements the industry's only second-generation probabilistic constellation shaping (PCS) with continuously adjustable transmission rate, supporting higher wavelength capacities over longer distances—including 400G support at any distance—over spectrally efficient 100GHz WDM channels, while further reducing network costs and power consumption per bit.