Fujitsu Laboratories Limited and Fujitsu Research and Development Center Co., Ltd. of China today announced the development of the world’s first optical-transmission technology that can achieve 100 Gbps transmission speeds using widely available, conventional components intended for 10 Gbps networking.
Increasing data-transfer rates has typically required new components designed for those higher speeds, for which existing components have not been compatible. Moreover, there is a limit to the speed improvements that can be achieved with transmission methods using the simple modulation and demodulation formats that have been used to date. Fujitsu Laboratories and Fujitsu R&D Center have applied a Discrete Multi-Tone (DMT) modulation/demodulation format(1) using digital signal processing (DSP) to transmit at 100 Gbps per channel using conventional components intended for transmission speeds of 10 Gbps per channel.
Applying this technology to an optical transceiver with four channels would result in a 400 Gbps Ethernet transceiver, which are needed in the next generation of datacenters in order to increase their data transmission speeds and processing capacity to better support cloud services.
Application for this technology
Through the use of this technology, high-speed transmissions at 100 Gbps were achieved using conventional components, opening the way to higher data transmission speeds and processing capacity at datacenters that support cloud services.
With an eye toward practical use of this technology, an integrated DMT modem is under consideration, and additional improvements for using existing technologies are proceeding.