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Unrepeatered 240-km 64-QAM Transmission Using Distributed Raman Amplification over SMF Fiber

AuthorsRosa, Pawel ; Rizzelli, Giuseppe; Pang, Xiaodan; Ozolins, Oskars; Udalcovs, Aleksejs; Tan, M.; Jaworski, M.; Marciniak, M.; Sergeyev, Sergey; Schatz, Richard; Jacobsen, G.; Popov, S.; Ania Castañón, Juan Diego
KeywordsDistributed Raman amplification
Digital backpropagation
Unrepeatered 64-QAM transmission
Issue Date2020
PublisherMultidisciplinary Digital Publishing Institute
CitationApplied Sciences 10(4): 1433 (2020)
AbstractWe present a theoretical and experimental investigation of unrepeatered transmission over standard single-mode fiber (SMF-28) using several schemes of distributed Raman amplification, including first, second, and dual order. In order to further extend the transmission distance, we utilize advanced bidirectional higher-order ultra-long Raman fiber laser-based amplification, where we use fiber Bragg gratings (FBGs) to reflect Stokes-shifted light from the secondary pumps. Our work demonstrates the possibility of transmission up to 240-km span length with a total span loss of 52.7 dB. Here, we use a 28-Gbaud signal using a 64-quadrature amplitude modulation (QAM) modulation format. Our results highlight the contribution of nonlinear compensation using digital back propagation in a digital signal processor (DSP) code at the receiver.
Description© 2020 by the authors.
Publisher version (URL)https://doi.org/10.3390/app10041433
Appears in Collections:(CFMAC-IO) Artículos
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