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Article

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

1
National Institute of Telecommunications, Szachowa 1, 04-894 Warsaw, Poland
2
Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
3
KTH Royal Institute of Technology, Isafjordsgatan 22, 164 40 Kista, Sweden
4
RISE Research Institutes of Sweden, Isafjordsgatan 22, 164 40 Kista, Sweden
5
Aston Institute of Photonics Technologies, Aston University, Birmingham B4 7ET, UK
6
Instituto de Óptica “Daza de Valdés”, CSIC, Serrano 121, 28006 Madrid, Spain
*
Author to whom correspondence should be addressed.
This paper is extended version of paper published in the Asia Communications and Photonics Conference 2017 held in Guangzhou, 10–13 November 2017.
Appl. Sci. 2020, 10(4), 1433; https://doi.org/10.3390/app10041433
Received: 17 December 2019 / Revised: 10 February 2020 / Accepted: 17 February 2020 / Published: 20 February 2020
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. View Full-Text
Keywords: distributed Raman amplification; digital backpropagation; unrepeatered 64-QAM transmission distributed Raman amplification; digital backpropagation; unrepeatered 64-QAM transmission
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MDPI and ACS Style

Rosa, P.; Rizzelli, G.; Pang, X.; Ozolins, O.; Udalcovs, A.; Tan, M.; Jaworski, M.; Marciniak, M.; Sergeyev, S.; Schatz, R.; Jacobsen, G.; Popov, S.; Ania-Castañón, J.D. Unrepeatered 240-km 64-QAM Transmission Using Distributed Raman Amplification over SMF Fiber. Appl. Sci. 2020, 10, 1433. https://doi.org/10.3390/app10041433

AMA Style

Rosa P, Rizzelli G, Pang X, Ozolins O, Udalcovs A, Tan M, Jaworski M, Marciniak M, Sergeyev S, Schatz R, Jacobsen G, Popov S, Ania-Castañón JD. Unrepeatered 240-km 64-QAM Transmission Using Distributed Raman Amplification over SMF Fiber. Applied Sciences. 2020; 10(4):1433. https://doi.org/10.3390/app10041433

Chicago/Turabian Style

Rosa, P., G. Rizzelli, X. Pang, O. Ozolins, A. Udalcovs, M. Tan, M. Jaworski, M. Marciniak, S. Sergeyev, R. Schatz, G. Jacobsen, S. Popov, and J. D. Ania-Castañón 2020. "Unrepeatered 240-km 64-QAM Transmission Using Distributed Raman Amplification over SMF Fiber" Applied Sciences 10, no. 4: 1433. https://doi.org/10.3390/app10041433

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