We experimentally demonstrated the transmission of 312 $\times {}$ 35 GBd DP-256QAM over 9 $\times {}$ 70 km spans using hybrid distributed Raman-EDFA (HRE) amplifiers with a continuous 91 nm gain bandwidth. A total throughput of 120 Tbit/s over 630 km is demonstrated, with a net achievable information rate after SD-FEC of 10.99 bit/symbol. An extensive, theoretical investigation of the noise contributions originating from amplifier, transceiver sub-system and fiber nonlinearity were carried out using the Gaussian noise model in the presence of inter-channel stimulated Raman scattering (ISRS GN model). The ISRS GN model accounts for arbitrary, wavelength dependent signal power profiles along fiber spans, which is vital for the modeling of ultra-wideband transmission, particularly for hybrid Raman-amplified links. The analysis serves to quantify the relative noise contributions and explain the performance achieved. It was found that, due to the low noise HRE amplifier and a transmission distance of 630 km, the noise originating from the transceiver sub-system imposed a penalty of 6 dB in SNR. For this system, the transceiver noise is, therefore, the main limitation to the system throughput.
© 2019 IEEE
PDF ArticleMore Like ThisOn the impact of launch power optimization and transceiver noise on the performance of ultra-wideband transmission systems [Invited]H. Buglia, E. Sillekens, A. Vasylchenkova, P. Bayvel, and L. GaldinoJ. Opt. Commun. Netw. 14(5) B11-B21 (2022)
Relative impact of channel symbol rate on transmission capacityThomas Gerard, Daniel Semrau, Eric Sillekens, Adrian Edwards, Wayne Pelouch, Stuart Barnes, Robert I. Killey, Domani莽 Lavery, Polina Bayvel, and Lidia GaldinoJ. Opt. Commun. Netw. 12(4) B1-B8 (2020)
Modeling and mitigation of fiber nonlinearity in wideband optical signal transmission [Invited]Daniel Semrau, Eric Sillekens, Polina Bayvel, and Robert I. KilleyJ. Opt. Commun. Netw. 12(6) C68-C76 (2020)
View More...High-capacity multi-span transmission performance characterization of broadband discrete Raman amplifierLukasz Krzczanowicz, Md Asif Iqbal, Ian Phillips, Paul Harper, and Wladek ForysiakOpt. Express 28(12) 18296-18303 (2020)
Performance characteristics of dual-pumped hybrid EDFA/Raman optical amplifierO. Mahran and Moustafa H. AlyAppl. Opt. 55(1) 22-26 (2016)
Previous ArticleNext Article Cited ByYou do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administratororLogin to access Optica Member Subscription