Unrepeatered 240-km 64-QAM Transmission Using Distributed Raman Amplification over SMF Fiber
Source abstract
Abstract
We 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.
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Research context
OpenAlex topics: Optical Network Technologies · Advanced Photonic Communication Systems · Advanced Optical Network Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
National Institute of Telecommunications, Szachowa 1, 04-894 Warsaw, Poland
Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
KTH Royal Institute of Technology, Isafjordsgatan 22, 164 40 Kista, Sweden
RISE Research Institutes of Sweden, Isafjordsgatan 22, 164 40 Kista, Sweden
Aston Institute of Photonics Technologies, Aston University, Birmingham B4 7ET, UK
Instituto de Óptica “Daza de Valdés”, CSIC, Serrano 121, 28006 Madrid, Spain
Funding
Horizon 2020 · Swedish Research Council · Seventh Framework Programme · Spanish MINECO · Spanish MICINN · Comunidad de Madrid · Swedish VINNOVA · Engineering and Physical Sciences Research Council
References (19)
Show source-provided references
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