Fujitsu Limited and KDDI Research have developed a large-capacity multiband wavelength multiplexing transmission technology using installed optical fibers.
The companies say the new technology enables wavelength transmission at 5.2 times the wavelength multiplicity of current commercial optical transmission technology. To increase the transmission capacity per fiber, the two companies aimed to increase the wavelength band used from the C band to the L band (1,565 nm to 1,625 nm), the S band (1,460 nm to 1,530 nm), the U band (1,625 nm to 1,675 nm), and the O band (1,260 nm to 1,360 nm), with the aim of making it multi-band.
As part of the project, Fujitsu built a simulation model that accounts for the degradation factors of transmission performance in multiband transmission, enabling the transmission design of multiband wavelength multiplexing systems.
The development was undertaken as 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).
