Hardware Ready Ready to Bench?
Fibra ottica 3,2 Pb/s. A team of Chinese researchers has announced a new record in optical fiber transmission: 3.2 petabits per second. The result was achieved through real-time signal processing and hardware architectures that meet the requirements for commercial applications.
The experiment aims to deliver extreme transmission capacity on a platform designed to approximate the conditions of operational networks, bridging the gap between laboratory demonstrations and actually usable infrastructure. Previously, the same group had reached 2.5 Pb/s in the same year using a 24-core fiber outside a laboratory context.
Fibra ottica 3,2 Pb/s: why it matters
The new value represents a 28% increase, or an additional 0.7 petabits per second of capacity. A fundamental aspect is real-time transmission, which requires managing the data flow as it traverses the system, constantly maintaining the pace of communication.
To understand the magnitude of this result, 3.2 Pb/s equates to the theoretical sum of 3.2 million gigabit-per-second connections. This value describes the aggregate capacity of the link, that is, the total amount of data that can be carried.
The move toward operational networks relies on the ability to process signals in real time with architectures compliant with commercial standards. The adopted solution combines spatial multiplexing with the use of multiple optical bands. Spatial multiplexing exploits distinct paths within the fiber to transmit multiple signals in parallel.
In a multicore structure, increasing the available paths allows overall capacity to be multiplied but requires control of interference between cores: part of one channel’s signal could disturb adjacent ones. Containing this phenomenon was one of the challenges faced by the researchers.
What changes and what are the effects
The second component is transmission over S+C+L bands, which expands the portion of the optical spectrum used to carry information. Space and spectrum are thus exploited in synergy: more parallel paths and greater optical resources on each.
Multiband transmission also required managing different technical requirements across the three bands, another aspect addressed during the experiment. In the laboratory, up to 5.29 Pb/s were reached on similar 24-core fibers, but this relied on advanced or experimental processing and specific instrumentation.
The compliance of the architectures with commercial requirements brings the new experiment closer to concrete applications, but it does not imply the immediate availability of a commercial 3.2 Pb/s network.
Source and further reading on Fibra ottica 3,2 Pb/s: original article.
* Content created with the assistance of artificial intelligence systems.