On the Interplay of Nonlinear Interference Generation With Stimulated Raman Scattering for QoT Estimation

High capacity long haul communication and cost-effective solutions for low loss transmission are the major advantages of optical fibers, which makes them a promising solution to be used for backhaul network transportation. A distortion-tolerant 100 Gbps framework that consists of long haul and high capacity transport based wavelength division multiplexed (WDM) system is investigated in this paper, with an analysis on different design parameters to mitigate the amplified spontaneous emission (ASE) noise and nonlinear effects due to the fiber transmission. The performance degradation in the presence of non-linear effects is evaluated and a digital signal processing (DSP) assisted receiver is proposed in order to achieve bit error rate (BER) of 1.56 × 10−6 and quality factor (Q-factor) of 5, using 25 and 50 GHz channel spacing with 90 μm2 effective area of the optical fiber. Analytical calculations of the proposed WDM system are presented and the simulation results verify the effectiveness of the proposed approach in order to mitigate non-linear effects for up to 300 km length of optical fiber transmission.

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“…The

presents linear term, while

denotes nonlinear dispersion. The induced polarization by electric dipoles is given by [ 23 , 24 ]

…”

Section: Analytical Modelmentioning

confidence: 99%

DSP-Assisted Nonlinear Impairments Tolerant 100 Gbps Optical Backhaul Network for Long-Haul Transmission

Irfan

Ali

Muhammad

et al. 2020

Entropy

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“…The well known fiber Bragg gratings (FBGs) are used in this technique [9], to provide compensation against the dispersion effects using frequency selective fading (FSF). FSF occurs because of ultra violet (UV) light at the optical fiber's core.…”

Section: Dispersion Compensating Gratingsmentioning

confidence: 99%

Adaptive Equalization for Dispersion Mitigation in Multi-Channel Optical Communication Networks

et al. 2019

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Optical communication networks (OCNs) provide promising and cost-effective support for the ultra-fast broadband solutions, thus enabling them to address the ever growing demands of telecommunication industry such as high capacity and end users’ data rate. OCNs are used in both wired and wireless access networks as they offer many advantages over conventional copper wire transmission such as low power consumption, low cost, ultra-high bandwidth, and high transmission rates. Channel effects caused by light propagation through the fiber limits the performance, hence the data rate of the overall transmission. To achieve the maximum performance gain in terms of transmission rate through the OCN, an optical downlink system is investigated in this paper using feed forward equalizer (FFE) along with decision feedback equalizer (DFE). The simulation results show that the proposed technique plays a key role in dispersion mitigation in multi-channel optical transmission to uphold multi-Gb/s transmission. Moreover, bit error rate (BER) and quality factor (Q-factor) below 10 − 5 and above 5, respectively, are achieved with electrical domain equalizers for the OCN in the presence of multiple distortion effects showing the effectiveness of the proposed adaptive equalization techniques.

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“…Particularly, the Gaussian Noise (GN) model offers reasonable accuracy while exhibiting a moderate computational complexity [12], [13]. Numerical integration of the GN model to obtain the nonlinear interference has a typical computation time of a few minutes per WDM channel [14], [15]. For ultrawideband signals that consist of 200 WDM channels or more, the computation time quickly amounts to a few hours to obtain the NLI distribution across the entire optical signal.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we introduced the ISRS GN model [14], [25], which is a GN model that rigorously accounts for ISRS and is, therefore, suitable for optical bandwidths beyond C-band. Comparable models were published in [15], [24], [26], [27]. The ISRS GN model relies on numerically solving an integral of at least three dimensions and an approximation in closedform has yet to be reported.…”

Section: Introductionmentioning

confidence: 99%

A Closed-Form Approximation of the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering

Semrau

Killey

Bayvel

2019

J. Lightwave Technol.

141

138

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An accurate, closed-form expression evaluating the nonlinear interference (NLI) power in coherent optical transmission systems in the presence of inter-channel stimulated Raman scattering (ISRS) is derived. The analytical result enables a rapid estimate of the signal-to-noise ratio (SNR) and avoids the need for integral evaluations and split-step simulations. The formula also provides new insight into the underlying parameter dependence of ISRS on the NLI. The proposed result is applicable for dispersion unmanaged, ultra-wideband transmission systems that use optical bandwidths of up to 15 THz.The accuracy of the closed-form expression is compared to numerical integration of the ISRS Gaussian Noise model and split-step simulations in a point-to-point transmission, as well as in a mesh optical network scenario.

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On the Interplay of Nonlinear Interference Generation With Stimulated Raman Scattering for QoT Estimation

Cited by 121 publications

References 29 publications

DSP-Assisted Nonlinear Impairments Tolerant 100 Gbps Optical Backhaul Network for Long-Haul Transmission

DSP-Assisted Nonlinear Impairments Tolerant 100 Gbps Optical Backhaul Network for Long-Haul Transmission

Adaptive Equalization for Dispersion Mitigation in Multi-Channel Optical Communication Networks

A Closed-Form Approximation of the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering

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