Fujitsu and KDDI Corp’s KDDI Research facility have announced the development of a large-capacity multiband wavelength multiplexing transmission technology using installed optical fiber. In a press release dated 4 December, the two companies noted that the new technology ‘enables transmission of wavelength bands other than the C band, which has not been used in medium- and long-distance commercial optical communications, using a batch wavelength conversion and multiband amplification technology’. The development work was reportedly 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).
‘The optical fibre communications network introduced with this technology enables wavelength transmission at 5.2 times the wavelength multiplicity of current commercial optical transmission technology … The technology makes it easier to expand the transmission capacity in urban areas and densely populated residential areas where installation can prove challenging, and offers the potential to significantly reduce the time required to start the service and reduce costs.’