Fujitsu and KDDI Research Make Breakthrough in Large-Capacity Multiband Wavelength Multiplexing Transmission Using Fiber Optics
In a groundbreaking development, Fujitsu Limited and KDDI Research have successfully implemented a new technology for large-capacity multiband wavelength multiplexing transmission using installed fiber optics, expanding the possibilities for optical communications.
They have achieved a 5.2 times multiplexed wavelength transmission, a significant improvement over existing commercial optical transmission technology, by enabling the transmission of wavelength bands beyond the traditional C band for medium- and long-distance optical communications, using a batch wavelength conversion and multiband amplification technology.
This breakthrough paves the way for increased communication traffic and bandwidth capabilities, all while reducing installation time and costs, particularly in urban areas and densely populated homes where infrastructure expansion can be challenging.
The development is part of the “Research and Development Project of the Enhanced Infrastructures for Post-5G Information and Communication Systems” commissioned by Japan’s New Energy and Industrial Technology Development Organization (NEDO), driven by the demand for services leveraging IoT, AI, and big data analysis.
As part of the effort to enhance post-5G optical networks, the two companies aimed to increase the bandwidth per fiber by expanding the wavelength bands used, making it multi-band, for more efficient communication transmission.
Fujitsu also developed a simulation model to represent the deterioration factors of transmission efficiency in multiband transmission, leading to the design of multiband wavelength multiplexing systems, which has revolutionized the future of optical communications.
