SummaryRecommendation ITU-T G.973.2 provides optical interface specifications towards the realization of transversely compatible dense wavelength division multiplexing (DWDM) systems intended for repeaterless submarine applications. This Recommendation defines parameters for the single-channel optical interface of physical point-to-point DWDM applications on single-mode optical fibres through the use of the "black-link" approach. Applications containing DWDM optical amplifiers are not defined in this Recommendation. This Recommendation describes DWDM systems that include the following features: – Channel frequency spacing: 100 GHz and below (defined in ITU-T G.694.1). – Bit-rate of signal channel: up to 10 Gbit/s. |