NEC contributes to Fiber Cable Transmission
VARINDIA- INDIA'S FRONTLINE IT MAGAZINE NEC has participated in Japan's first DWDM transmission of 100Gbps per wavelength, realized using commercial fiber cable along Japan’s highest volume transmission route connecting the 710 km between Tokyo, Nagoya and Osaka. These results were accomplished through 100Gbps optical transmission trials carried out by NTT Communications Corporation. Tests were conducted using existing commercial cable with the intention of introducing 100Gbps-DWDM systems to backbone networks in the near future. These actual operating conditions present a variety of operational challenges, including fluctuations in optical signal loss due to transmission route changes and variability in optical fiber characteristics (Chromatic Dispersion, Polarization-Mode Dispersion. NEC's 100Gbps-DWDM system addressed these issues by utilizing a transponder equipped with its internally developed 100G DP-QPSK digital coherent optical transceiver module, which d...