Modelling the Delayed Nonlinear Fiber Response in Coherent Optical Communications

Semrau, Daniel; Sillekens, Eric; Killey, Robert I.; Bayvel, Polina

doi:10.1109/jlt.2020.3046998

Cited by 10 publications

(1 citation statement)

References 64 publications

(129 reference statements)

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“…However, this method is inefficient to implement for wide bandwidths systems and/or long-haul links due to the computational effort [29]. Also, the use the fast Fourier transform (FFT) and its inverse fast Fourier transform (IFFT) for every nonlinear step increases the computational complexity for predication the performance of SMF transmission by around 50% [30]. To enable real-time prediction of fiber channel performance in UWB-WDM systems, a closed form approximation of the Gaussian noise model which has been used to predict the performance of these systems, is needed.…”

Section: Systems Under Considerationmentioning

confidence: 99%

Toward Seven-Band Coherent WDM System Covering T to U Bands: Predictions of Transmission and BER Performance

Moosa,

Fyath

2024

NJES

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This paper discusses the development of a seven-band coherent wavelength-division multiplexing (WDM) system covering the T to U systems, aiming to enhance the capacity and system efficiency. Seven multiband systems (C+L, S+C+L, S+C+L+U, E+S+C+L, E+S+C+L+U, O+E+S+C+L+U, and T+O+E+S+C+L+U) are designed with 40 GBaud symbol rate, 50 GHz channel spacing, and dual-polarization (DP)-16QAM signaling. The analysis adopted the enhanced Gaussian noise model, considering the amplified spontaneous emission of inline optical amplifiers and nonlinear interference (NLI) from fiber nonlinear optics, including Kerr effect and stimulated Raman scattering (SRS) which it implemented using Matlab (Ver. 2020b) program. The results show that the optimal powers are -4, -5, -5, -4.5, -3.5, -6, and -4.5 dBm for the seven WDM systems, respectively. Further, with a fiber span length of 100 km, the C+L system has the longest transmission reach of 20 span. However, using S+C+L+U system gives the highest bit rate-distance product of 1619 Tbps.km. The O+E+S+C+L+U and T+O+E+S+C+L+U systems are designed with 50 km-span length to reduce the effect of NLI caused by the large numbers of channels (1060 and 1200, respectively).

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Section: Systems Under Considerationmentioning

confidence: 99%