Information rates in Kerr nonlinearity limited optical fiber communication systems

Xu, Tianhua; Shevchenko, Nikita A.; Zhang, Yunfan; Jin, Cenqin; Zhao, Jian; Liu, Tiegen

doi:10.1364/oe.415753

Cited by 26 publications

(21 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…q, r represents the indices of the memory k is nonlinearity index and R c and R b exhibit the leading and lagging delay tap lengths, respectively. Since, in [62][63][64][65][66][67][68][69][70][71], it was established that GMP is better as compared to MP, therefore for simplicity, evaluation with GMP is included in this paper.…”

Section: Generalized Memory Polynomial (Gmp)mentioning

confidence: 99%

Experimental Demonstration and Performance Enhancement of 5G NR Multiband Radio over Fiber System Using Optimized Digital Predistortion

et al. 2021

View full text Add to dashboard Cite

This paper presents an experimental realization of multiband 5G new radio (NR) optical front haul (OFH) based radio over fiber (RoF) system using digital predistortion (DPD). A novel magnitude-selective affine (MSA) based DPD method is proposed for the complexity reduction and performance enhancement of RoF link followed by its comparison with the canonical piece wise linearization (CPWL), decomposed vector rotation method (DVR) and generalized memory polynomial (GMP) methods. Similarly, a detailed study is shown followed by the implementation proposal of novel neural network (NN) for DPD followed by its comparison with MSA, CPWL, DVR and GMP methods. In the experimental testbed, 5G NR standard at 20 GHz with 50 MHz bandwidth and flexible-waveform signal at 3 GHz with 20 MHz bandwidth is used to cover enhanced mobile broad band and small cells scenarios. A dual drive Mach Zehnder Modulator having two distinct radio frequency signals modulates a 1310 nm optical carrier using distributed feedback laser for 22 km of standard single mode fiber. The experimental results are presented in terms of adjacent channel power ratio (ACPR), error vector magnitude (EVM), number of estimated coefficients and multiplications. The study aims to identify those novel methods such as MSA DPD are a good candidate to deploy in real time scenarios for DPD in comparison to NN based DPD which have a slightly better performance as compared to the proposed MSA method but has a higher complexity levels. Both, proposed methods, MSA and NN are meeting the 3GPP Release 17 requirements.

show abstract

Section: Generalized Memory Polynomial (Gmp)mentioning

confidence: 99%

Experimental Demonstration and Performance Enhancement of 5G NR Multiband Radio over Fiber System Using Optimized Digital Predistortion

et al. 2021

View full text Add to dashboard Cite

show abstract

“…For silica based fiber, the typical value of n 2 varies between 1.2 × 10 −20 m 2 W −1 and 3.2 × 10 −20 m 2 W −1 [27]. From (42), it is clear that the nonlinear part of the refractive index n is proportional to the optical intensity |E 0 | 2 . This effect is termed as the Kerr effect [27].…”

Section: Re[ementioning

confidence: 99%

“…This leads to a frequency chirping effect [7,[41][42][43], which interacts with the CD and causes the spectral broadening of the optical pulse. The IXPM is the result of the refractive index change proportional to the intensity of the neighbouring pulses in the same channel [7,[41][42][43]. The IXPM yields a timing jitter between the co-propagating pulses, which leads to performance degradation.…”

Section: Kerr-induced Fiber Nonlinearity Effectsmentioning

confidence: 99%

“…That is due to the random propagation of SOP inside the optical fiber caused by PMD [7,[41][42][43] and causes channel cross-talk for PDM-WDM systems [7,[41][42][43]. The FWM in the multichannel system is generated by the nonlinear interaction between two or more co-propagating wavelength channels [7,[41][42][43]. The FWM results in significant performance degradation due to cross-talk among different wavelength channels [7,[41][42][43].…”

Section: Kerr-induced Fiber Nonlinearity Effectsmentioning

confidence: 99%

See 1 more Smart Citation

A tutorial on fiber Kerr nonlinearity effect and its compensation in optical communication systems

Kumar

2021

J. Opt.

View full text Add to dashboard Cite

The advent of silica-based low-cost standard single-mode fibers revolutionized the whole communication industry. The deployment of optical fibers in the networks induces a paradigm shift in the communication technologies used for long-haul information transfer. However, the communication using the optical fibers is affected by several linear and nonlinear effects. The most common linear effects are attenuation and chromatic dispersion, whereas the dominant nonlinear effect is the Kerr effect. The Kerr effect induces a power-dependent nonlinear distortion for the signal propagating in the optical fiber. The detrimental effects of the Kerr nonlinearity limit the capacity of long-haul optical communication systems. Fiber Kerr nonlinearity compensation using digital signal processing (DSP) techniques has been well investigated over several years. In this paper, we provide a comprehensive tutorial, including the fundamental mathematical analysis, on the characteristics of the optical fiber channel, the origin of the Kerr nonlinearity effect, the theory of the pulse propagation in the optical fiber, and the numerical and analytical tools for solving the pulse propagation equation. In addition, we provide a concise review of various DSP techniques for fiber nonlinearity compensation, such as digital back-propagation, Volterra series-based nonlinearity equalization, perturbation theory-based nonlinearity compensation, and phase conjugation. We also carry out numerical simulation and the complexity evaluation of the selected nonlinearity compensation techniques.

show abstract

“…Several techniques have been reported to improve the capacity of RoF communication systems [9][10][11]. The performance of multiple modulation formats, such as dual-polarization quadrature phase-shift keying (DP-QPSK), dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM), DP-64QAM, and DP-256QAM, was studied in C-band systems with different transmission distances.…”

Section: Introductionmentioning

confidence: 99%

Effect of Phase Noise on the Optical Millimeter-Wave Signal in the DWDM-RoF System

et al. 2022

View full text Add to dashboard Cite

In this study, we examined the effect of phase noise on the optical millimeter-wave (mm-wave) signal in a dense wavelength division multiplexing radio-over-fiber (DWDM-RoF) system. A single modulator was used to generate the optical mm-wave signal in the DWDM-RoF system. This paper addresses the impact of phase noise, which results from phase imbalance, on the optical mm-wave signal. To lower the effect of phase noise on the optical mm-wave signal, the phase imbalance should be controlled. The phase imbalance can be controlled and decreased by adjusting the phase at the phase shift (PS). The system performance was analyzed using various parameters such as bit error rate (BER), signal-to-noise ratio (SNR), optical signal to noise ratio (OSNR), and error vector magnitude (EVM). From the results, we found the phase imbalance affected the optical mm-wave signal due to the imbalanced splitting of the signal intensity at the MZM. The phase imbalance impacts the phase noise, which impacts the optical mm-wave signal. The phase noise could be decreased by controlling the phase imbalance at the phase of 5π/12. The best results at the phase of 5π/12 were collected for phase noise at 0.02 degrees.

show abstract

Information rates in Kerr nonlinearity limited optical fiber communication systems

Cited by 26 publications

References 41 publications

Experimental Demonstration and Performance Enhancement of 5G NR Multiband Radio over Fiber System Using Optimized Digital Predistortion

Experimental Demonstration and Performance Enhancement of 5G NR Multiband Radio over Fiber System Using Optimized Digital Predistortion

A tutorial on fiber Kerr nonlinearity effect and its compensation in optical communication systems

Effect of Phase Noise on the Optical Millimeter-Wave Signal in the DWDM-RoF System

Contact Info

Product

Resources

About