Mitigation of dispersion-induced effects using SOA in analog optical transmission

Jeon, Duk-Ho; Jung, Han Young; Han, Sang-Kook

doi:10.1109/lpt.2002.1022006

Cited by 26 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, Digital Signal Processing (DSP) methodologies have been exploited as well owing to their adaptive flexibility. A lot of such techniques have been studied to counter the phase noise issue [36][37][38], of optical modulator [39,40]. Digital pre-distortion is presented for laser resonance, improving results in [41].…”

Section: Literature Reviewmentioning

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: Literature Reviewmentioning

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

“…The optical fiber for signal transmission is also a nonlinear medium and hence, nonlinear impairments are also imposed to the RoF signal after fiber transmission, such as the self-phase modulation and the four-wave mixing. To solve the nonlinear impairments in RoF systems, linearization techniques have been widely studied [23][24][25][26][27][28][29][30][31][32][33][34][35][36]. One widely investigated linearization scheme is feedforward [26,27], such as the up to 10 dB spur-free dynamic range (SFDR) improvement over a broad bandwidth from 7 GHz to 18 GHz achieved in Reference [27].…”

Section: Nonlinearitymentioning

confidence: 99%

“…To solve this issue, other optical linearization techniques have been proposed, such as the dual parallel modulation scheme that has suppressed the IMD by up to 38 dB [28], the mixed-polarization scheme [29,30], the dual electro-absorption modulators scheme [31][32][33] (e.g., IMD suppressed by over 16 dB and SFDR improved by over 8 dB in Reference [32]), the gain modulation scheme that has suppressed the IMD by over 7 dB and improved the dynamic range by about 11 dB [34] and the cascaded modulator and semiconductor optical amplifier (SOA) scheme [35]. The pre-distortion technique has also been proposed and demonstrated [36][37][38][39], where predictable nonlinearities can be compensated. 6 dB improvement of IMD together with a 14 dB peak improvement of the dynamic range has been achieved [37].…”

Section: Nonlinearitymentioning

confidence: 99%

Machine Learning Techniques in Radio-over-Fiber Systems and Networks

Lee

Kandeepan

et al. 2020

Photonics

View full text Add to dashboard Cite

The radio-over-fiber (RoF) technology has been widely studied during the past decades to extend the wireless communication coverage by leveraging the low-loss and broad bandwidth advantages of the optical fiber. With the increasing need for wireless communications, using millimeter-waves (mm-wave) in wireless communications has become the recent trend and many attempts have been made to build high-throughput and robust mm-wave RoF systems during the past a few years. Whilst the RoF technology provides many benefits, it suffers from several fundamental limitations due to the analog optical link, including the fiber chromatic dispersion and nonlinear impairments. Various approaches have been proposed to address these limitations. In particular, machine learning (ML) algorithms have attracted intensive research attention as a promising candidate for handling the complicated physical layer impairments in RoF systems, especially the nonlinearity during signal modulation, transmission and detection. In this paper, we review recent advancements in ML techniques for RoF systems, especially those which utilize ML models as physical layer signal processors to mitigate various types of impairments and to improve the system performance. In addition, ML algorithms have also been widely adopted for highly efficient RoF network management and resource allocation, such as the dynamic bandwidth allocation and network fault detection. In this paper, we also review the recent works in these research domains. Finally, several key open questions that need to be addressed in the future and possible solutions of these questions are also discussed.

show abstract

Semiconductor optical amplifier cascaded optical single‐sideband modulation with phase pre‐distortion

Koo

Lee

et al. 2004

Micro & Optical Tech Letters

View full text Add to dashboard Cite

tion to the total inductance value of the spiral inductor, as they are in quadrature with the excitation currents. The effects of both the skin effects and the eddy currents on the overall inductance value were explained using the equivalent circuit model and validated by experimental data. REFERENCES1. A.M. Niknejad and R.G. Meyer, Analysis, design, and optimization of spiral inductors and transformers for Si RF IC's, IEEE J Solid-State Circ 33 (1998), 1470 -1481. 2. Y. Koutsoyannopoulos et al., A generic CAD model for arbitrary shaped and multilayer integrated inductors on silicon substrates, Proc ESSDERC, 1997, pp 320 -323. 3. J.R. Long and M.A. Copeland, The modeling, characterization and designed monolithic inductors for silicon RF ICs, IEEE J Solid-State ABSTRACT: An optical single sideband modulation with a cascaded semiconductor optical amplifier (SOA) is proposed and experimentally demonstrated. The single sideband-modulated signal is predicted using the phase predistortion technique in the RF input of the Mach-Zehnder modulator. The predicted results are compared with the measured data and good agreement is reported. ABSTRACT: A TLM model suitable to simulate the propagation of electromagnetic waves in Tellegen media is presented. The angle tilt between electromagnetic field vectors, the intrinsic impedances and the effective parameters of the medium are computed. The results for a monochromatic source are in very good agreement with the analytical solution.

show abstract

Mitigation of dispersion-induced effects using SOA in analog optical transmission

Cited by 26 publications

References 10 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

Machine Learning Techniques in Radio-over-Fiber Systems and Networks

Semiconductor optical amplifier cascaded optical single‐sideband modulation with phase pre‐distortion

Contact Info

Product

Resources

About