Abstract:

When work and protection channels of services facing cross equipments/manufacturers witnin OTN networks, 1+1 optical channel protection is commenly used. Aiming at the problems in the application of this protection in the current network, by analyzing the switching mechanism of 1+1 optical channel protection and ODUk sncp1+1 protection, this paper proposes to improve the protection mode from 1+1 optical channel protection to SNCP1+1 protection by adjusting the branch interface of cross equipments/manufacturers to OTUK / IrDI OTUK, so as to solve the switching time of cross manufacturers 1+1 optical channel protection signal degradation cannot trigger 1+1 optical channel protection, and the impact of insertion loss introduced by OCP panel on customer side on customer signal.

Key words: OTN, ODUk SNCP 1+1 protection, 1+1 optical channel protection, IrDI interface