At SCTE's Cable-Tec Expo this year, Infinera will showcase the latest release of its metro and long haul DWDM Digital ROADM, Infinera DTN 7.0. In the new release, Infinera's DTN platform offers new capabilities including 40 and 100 GigE service interfaces to support high-bandwidth applications and a new DWDM line card to support 40 Gbps per wavelength coherent optical transmission, enabling the DTN platform to scale up to 6.4 Tbps of transmission capacity per fiber.