In this work, by means of numerical simulation, the application of the link control protection technique on power transient suppression in cascades of distributed fiber Raman amplifiers (DFRAs) is investigated. The results point out that for a 10 DFRA's cascade, the power excursion in the surviving channels, at the 10th amplification stage, is reduced by 2.15 dB to 0.037 dB, when 8 out of 10 channels are involved in add/drop operations.
Abstract-In this work we introduce the use of the per-band link control method in cascades of distributed fiber Raman amplifiers (DFRAs) for compensating power transients of WDM channels. By using two compensation channels, each one controlled by a proportional-integrative electronic control circuit and assigned to a particular signal band, the power excursion achieved in the surviving channels, in a cascade of 10 DFRAs, is reduced from 4.88 dB to 0.24 dB, when 17 out of 20 channels are added or dropped. By adding more compensation channels, this transient protection technique can be extended to wideband DFRAs applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.