Fujitsu, NTT and NEC last week announced that they have successfully tested the 400Gbps/channel-class digital coherent optical transmission technology up to a distance of 10,000km, bringing the technology a step closer towards commercialization. The R&D initiative was commissioned and sponsored by Japan's Ministry of Internal Affairs and Communications (MIC) as part of its "Research and Development Project for the Ultra-high Speed and Green Photonic Networks" program.
The breakthrough technology of ultra-high speeds on low power consumption quadruples optical transmissions using existing optical fiber, enabling the construction of the world's top-level core network, with the ability to handle transmissions of ultra-high-definition videos and cater for the widespread expansion of machine-to-machine (M2M) communications.
The test, with 400Gbps-class signals multiplexed up to 62 channels verified the fiber-optic transmissions of 12.4-24.8Tbps wavelength division multiplexed signals having different capacities for each modulation method at distances ranging from several thousand kilometers up to 10,000km, according to a joint statement.
