49.3 Tb/s Transmission Over 9100 km Using C+L EDFA and 54 Tb/s Transmission Over 9150 km Using Hybrid-Raman EDFA

Cai, J.-X.; Sun, Yu; Zhang, Hongbin; Batshon, Hussam G.; Mazurczyk, M.; Sinkin, O. V.; Foursa, D. G.; Pilipetskii, A.N.

doi:10.1109/jlt.2015.2409846

Cited by 57 publications

(23 citation statements)

References 16 publications

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“…The impact of the total bandwidth on the difference in performance is very much very much lower, since this is dominated by the phase matching effects of dispersion, and is reflected in the logarithmic terms of equation 31, where the main difference is the effective lengths of the two systems. For submarine systems, where amplifiers spacing [167] and modulation format [168] are typically optimized to maximize the capacity per unit energy, it has been observed that the gain from including Raman amplification is less than 2dB [169], whilst for terrestrial systems, where amplifier spacing is typically much larger, the gains from the inclusion of Raman amplified spans are much more significant. The approach detailed above, where all noise sources are treated independently, and also independent of the signal has proved accurate for a wide range of deliberate experimental tests [170][171][172] and independent comparisons between predictions and experiments.…”

Section: Nonlinear Signal To Noise Ratio In a Coherent Transmission Smentioning

confidence: 99%

Performance limits in optical communications due to fiber nonlinearity

Ellis¹,

McCarthy²,

Khateeb³

et al. 2017

Adv. Opt. Photon.

147

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Section: Nonlinear Signal To Noise Ratio In a Coherent Transmission Smentioning

confidence: 99%

Performance limits in optical communications due to fiber nonlinearity

Ellis¹,

McCarthy²,

Khateeb³

et al. 2017

Adv. Opt. Photon.

147

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“…These techniques improve the signal performance when it reaches the transmission ends. Hybrid Raman/EDFA is one of the techniques that are used to improve the gain efficiency for the L-band with the integration of Raman amplification in the remote erbium doped fiber amplifier (R-EDFA) [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement for Hybrid L-band Remote Erbium Doped Fiber Amplifier/Raman using Phase Modulator

Yusoff

Sulaiman

Ambran

et al. 2018

IJECE

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We have demonstrated the performance improvement of L-band hybrid remote Erbium-doped fiber amplifier by introducing a phase modulator to suppress the stimulated Brilloiun scattering (SBS) effect in the transmission. The transmission gain has improved by 12.65dB while the noise figure has reduced by 47.1dB when 0dBm signal power is generated at 1590.05nm wavelength. Furthermore, the optical signal-to-noise ratio has improved from 7.81dB to 29.72dB when the signal power is varied from -30dBm to 0dBm. By implementing a phase modulator to the input signal somehow able to produce better performance regarding gain, noise figure and optical signalto-noise ratio, especially at the higher signal power as the gain, has been transferred to the Stokes signal and the amplified signal.

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“…Theses records have been empowered by the combination of coded modulation with hybrid probabilistic and geometrical constellation shaping with multi-stage nonlinearity compensation including digital back-propagation, fast LMS equalizer and generalized filter, together with a per channel adaptive-rate decoding. Despite the advantages of using low noise hybrid distributed Raman-EDFA amplifier (HRE) as demonstrated in [3] most of theses records throughput in trans-Atlantic and trans-Pacific distance was achieved by using C+L band EDFA. On the other hand, the records throughout in short, metropolitan transmission distance have been achieved mainly by using amplification techniques that goes beyond C+L band EDFAs.…”

Section: Introductionmentioning

confidence: 99%