A research team in China has established a new world record for real-time optical fiber data transmission, reaching a speed of 3.2 Pb/s. This result surpasses the previous record of 2.5 Pb/s, which was set by the same group earlier this year, marking a performance increase of nearly 30 percent within a single year.
The achievement relies on spatial division multiplexing and S+C+L multi-band transmission technology. Researchers successfully addressed technical challenges such as crosstalk interference and the varying specification requirements across the S+C+L bands. The test utilized commercially compliant hardware architectures, suggesting potential for future real-world deployment.
The researchers noted that this transmission capacity could theoretically support 3.2 million households using gigabit broadband simultaneously. While academic laboratory experiments have demonstrated speeds up to 5.29 Pb/s using 24-core telecommunications fiber, those tests often depend on experimental signal processing equipment, unlike the commercially viable approach used here.
