Dispersion compensation dense wavelength division multiplexing (DC DWDM) for nonlinearity analysis at various propagation distance and input power

Nawawi, Mohd; Anuar, M. S.; Rashidi, C. B. M.; Aljunid, S. A.; Rahman, A. K.; Junita, M. N.; Abdullah, Siti Radziah

doi:10.1109/i4ct.2015.7219595

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…The number of connections per one link is assumed n = 128 by reference to dense WDM networks [19], [20]. In order to examine the effect of arrival rate, the average arrival rate is normalized by the average service rate in the system: µ = 1.0 [/s].…”

Section: Numerical Resultsmentioning

confidence: 99%

Adaptive Elastic Spectrum Allocation Based on Traffic Fluctuation Estimate under Time-Varying Traffic in Flexible OFDM-Based Optical Networks

Chino

Kamio

Matsumoto

et al. 2017

IEICE Trans. Commun.

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A flexible orthogonal frequency-division multiplexing optical network enables the bandwidth to be flexibly changed by changing the number of sub-carriers. We assume that users request to dynamically change the number of sub-carriers. Dynamic bandwidth changes allow the network resources to be used more efficiently but each change takes a significant amount of time to complete. Service centric resource allocation must be considered in terms of the waiting time needed to change the number of sub-carriers. If the user demands drastically increase such as just after a disaster, the waiting time due to a chain-change of bandwidth becomes excessive because disaster priority telephone services are time-critical. This paper proposes a Grouped-elastic spectrum allocation scheme to satisfy the tolerable waiting time of the service in an optical fiber link. Spectra are grouped to restrict a waiting time in the proposed scheme. In addition, the proposed scheme determines a bandwidth margin between neighbor spectra to spectra to prevent frequent reallocation by estimating real traffic behavior in each group. Numerical results show that the bandwidth requirements can be minimized while satisfying the waiting time constraints. Additionally measurement granularity and channel alignment are discussed.

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Section: Numerical Resultsmentioning

confidence: 99%

Adaptive Elastic Spectrum Allocation Based on Traffic Fluctuation Estimate under Time-Varying Traffic in Flexible OFDM-Based Optical Networks

Chino

Kamio

Matsumoto

et al. 2017

IEICE Trans. Commun.

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show abstract

“…The nonlinearly distorted signal can be decomposed as the sum of an "useful" component, proportional to the original signal, and an uncorrelated nonlinear distortion component in optical fiber channel. Multicarrier signals, OFDM and OFDM/OQAM signals in particular, are very prone to nonlinear distortion effects, namely those associated with power amplifiers due to their large envelope fluctuations [50].…”

Section: Nonlinear Effect Induced Distortions Analysis For O-ofdmmentioning

confidence: 99%

Volterra Expansion Based Intra Channel Nonlinear Effect Equalization Method for Optical OFDM/OQAM Systems

Fang

et al. 2020

IEEE Access

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“…FBG is a dispersion compensator in long-haul DWDM. There are two types of FBG (uniform FBG and CFBG) [20]. In a uniform FBG, the refractive index variation is constant along the length.…”

Section: I In Nt Tr Ro Od Du Uc Ct Ti Io On Nmentioning

confidence: 99%

Comparative Simulation Analysis of Dispersion Mitigation Techniques Using Symmetrical-DCF, FBG and CFBG in High Speed DWDM Networks

Mohammed

Rashed

Aref

2020

Menoufia Journal of Electronic Engineering Research

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The performance of the dense wavelength division multiplexing (DWDM) network is severely limited by the chromatic dispersion. So, it is crucial to mitigate and compensate this dispersion. In this paper, the different dispersion compensation techniques are discussed and compared. The DWDM system performance is evaluated by utilizing these dispersion mitigation techniques. The techniques used are dispersion compensation fiber (DCF) with symmetrical compensation scheme, Fiber Bragg Grating (FBG) and Chirped Fiber Bragg Grating (CFBG). The system performance is investigated for 16-channels DWDM network using Return-to-Zero (RZ) and Non-Return-to-Zero (NRZ) modulation formats over transmission distance up to 200 km at 2.5 and 5 Gb/s data flow rate per channel. The system performance is evaluated according to Quality factor (Q-factor), Optical Signal to Noise Ratio (OSNR) and Signal to Noise Ratio (SNR) through Eye Diagrams. The DWDM network is implemented by using Optisystem simulator. The simulation results are outlined in tables indicating the most efficient dispersion compensation technique. The simulation results revealed that the systems using FBG as dispersion compensator offers better performance and larger Q-factor especially for longer transmission distance. FBG achieved Q-factor of approximately 38 and 62 which are the larger Q-factor values compared to other dispersion compensation methods at data rate of 2.5 Gb/s over 200 km fiber length for NRZ and RZ respectively. Furthermore, as data rate increases, the performance is reduced adversely due to pulse broadening causing interference with adjacent channels. Finally, the systems using RZ format provides better performance than those that using NRZ although, NRZ has less pulse broadening due to its reduced bandwidth.

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Dispersion compensation dense wavelength division multiplexing (DC DWDM) for nonlinearity analysis at various propagation distance and input power

Cited by 10 publications

References 4 publications

Adaptive Elastic Spectrum Allocation Based on Traffic Fluctuation Estimate under Time-Varying Traffic in Flexible OFDM-Based Optical Networks

Adaptive Elastic Spectrum Allocation Based on Traffic Fluctuation Estimate under Time-Varying Traffic in Flexible OFDM-Based Optical Networks

Volterra Expansion Based Intra Channel Nonlinear Effect Equalization Method for Optical OFDM/OQAM Systems

Comparative Simulation Analysis of Dispersion Mitigation Techniques Using Symmetrical-DCF, FBG and CFBG in High Speed DWDM Networks

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