Bibliographies thématiques / Chromatic dispersion pre-compensation

Littérature scientifique sur le sujet « Chromatic dispersion pre-compensation »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "Chromatic dispersion pre-compensation"

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Singh, Alok, et Abhishek Sureel. « Study of POST and PRE-Scheme of Dispersion Compensation in a 32 Channel DWDM Network with NRZ, RZ and Encoded Transmitter ». International Journal of Advance Research and Innovation 9, no 2 (2021) : 54–61. http://dx.doi.org/10.51976/ijari.922109.

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Dense Wavelength Division Multiplexing (DWDM)is a technique that has been developed to improve the channel range and bandwidth of optical fibre transmission systems. Multiple information channels of varying wavelengths are sent on a single fibre The phenomenon of an input signal spreading out as it flows down the fibre is referred to as optical fibre dispersion. Chromatic, modal and polarisation mode dispersion are all examples of dispersion in fibre optic cable. To compensate for such dispersion, this paper introduces two techniques: Dispersion Compensation Fibre (DCF) and fibre Bragg Grating (FBG).In this paper we will explore Pre, Post Dispersion compensation technique with input as RZ, NRZ and MDRZ encoded. This analysis was carried out and simulated using Optisystem17, which took into account a number of variables such as Maximum Quality Factor, Eye Height, and Minimum Bit Error Rate (BER). Results were analysed for different lengths of transmission.
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Qiao, Yao-Jun, Xue-Jun Liu et Yue-Feng Ji. « Joint nonlinearity and chromatic dispersion pre-compensation for coherent optical orthogonal frequency-division multiplexing systems ». Chinese Physics B 20, no 11 (novembre 2011) : 114212. http://dx.doi.org/10.1088/1674-1056/20/11/114212.

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Wang, Haoyi, Pablo Torres-Ferrera, Giuseppe Rizzelli, Roberto Mercinelli, Valter Ferrero et Roberto Gaudino. « 200 Gbps/λ PON Downstream C-Band Direct-Detection Links with ≥29 dB Power Budget ». Applied Sciences 12, no 7 (30 mars 2022) : 3538. http://dx.doi.org/10.3390/app12073538.

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In this paper we present the simulative analysis of a 200 Gbps per wavelength (λ) 8-level pulse amplitude modulation (PAM-8) downstream communication over up to 20 km single mode fiber (SMF) in C-band based on direct detection (DD) achieving at least a 29 dB link power budget in a PON environment. We use chromatic dispersion digital pre-compensation (CD-DPC) and a dual-arm in-phase and quadrature Mach–Zehnder modulator (IQ-MZM) at the optical line termination (OLT) side, while preserving DD in the optical network unit (ONU). Three receiver digital-signal-processing (DSP) options are analyzed and compared: square-root-like technique (SQRT) in combination with a feed forward equalizer (FFE) and a decision feedback equalizer (DFE), the Volterra nonlinear equalizer (VNLE), and the SQRT in combination with the VNLE. The SQRT can be applied in combination with the VNLE to decrease the receiver DSP complexity while maintaining the required system performance. We show that PAM-8 with CD-DPC and the SQRT in combination with the VNLE is a feasible solution for 200 Gbps per λ downstream C-band transmission for PON.
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Kumar, Chakresh, et Ghanendra Kumar. « Enhancement of Signals Characteristics with Least Effect of Optical Communication Losses for Dense Optical Communication Systems ». Journal of Optical Communications, 10 septembre 2019. http://dx.doi.org/10.1515/joc-2019-0166.

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AbstractIn this paper, the major aim is to enhance the bandwidth and therefore increase the capacity of the optical fibre communication system by reducing the dispersion in the fibre. Dispersion compensation is necessary to reduce losses and cost of the system. In this paper, we are basically focusing on reducing or decreasing chromatic dispersion. Chromatic dispersion is a type of dispersion in which pulse broadening occurs due to delay in different spectral components. We here make use of dispersion compensated fibre (DCF) for reducing the dispersion in the WDM system. Here, we basically use three dispersion compensated techniques (pre-compensation, post-compensation and mix compensation). The comparison in the three models of dispersion compensated technique is made in terms of transmission power vs. Q factor and also transmission power vs. Bit Error Rate.
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Mustafa, Fathy M., Sayed A. Zaky, Ashraf A. M. Khalaf et Moustafa H. Aly. « Chromatic dispersion compensation by cascaded FBG with duobinary modulation scheme ». Optical and Quantum Electronics 54, no 12 (5 octobre 2022). http://dx.doi.org/10.1007/s11082-022-04202-9.

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AbstractIn this paper, we propose a dispersion compensation model to minimize the chromatic dispersion to enhance system performance. The proposed model is based on applying the duobinary modulation scheme on 4-stages of cascaded identical apodized uniform fiber Bragg grating. Different apodization functions are tested to determine the one that provides the best performance. The proposed model is connected in three different connection schemes: pre, post and symmetrical, to get the best connection. To evaluate the performance of the proposed system, a comparative study is conducted using non-return to zero (NRZ) and modified duobinary (MDB) modulation schemes. For evaluation, a 10 Gbps WDM link is simulated at a distance of 100 km under a set of predefined operating parameters. Optisystem 17.0 is used for simulation and evaluation. Both quality factor (Q-factor) and bit error rate (BER) are used as performance indices. All cases of NRZ modulation scheme do not meet the minimum operational requirements in terms of Q-factor and BER. Only in the case of MDB modulation scheme, the symmetrical compensation with tanh apodization meets the minimum operational requirements with a Q-factor of 6.39 and BER of 8.44 × 10–11. The proposed model achieves better results as compared to the other modulation schemes: a maximum Q-factor values of 8.964 and a BER of 1.3 × 10–19 with tanh apodization in the pre-compensation scheme. As compared to related work, the system performance achieves ~ 99% improvement.
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Mustafa, Fathy M., Hisham A. Kholidy, Ahmed F. Sayed et Moustafa H. Aly. « Enhanced dispersion reduction using apodized uniform fiber Bragg grating for optical MTDM transmission systems ». Optical and Quantum Electronics 55, no 1 (9 décembre 2022). http://dx.doi.org/10.1007/s11082-022-04339-7.

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AbstractThe aim of this work is to propose a model for enhancing chromatic dispersion compensation in standard single mode optical fibers (SSMFs). The proposed model consists of a single stage Apodized Uniform Fiber Bragg Gratings (AUFBG) in a post-compensation scheme. It is based on the Maximum Time Division Multiplexing (MTDM) technique. The performance of the proposed model is evaluated through the quality factor (Q-factor) and Bit Error Rate (BER) in four cases, in a comparative study. In case one, the system performance is evaluated without using UFBG. The other cases study the effect of the proposed model with using different connections schemes and the most common apodization functions. For simulation, the proposed model is connected in a 10 Gbps WDM 70 km link under ordinary operating parameters. The simulation and evaluation process is conducted by Optisystem 7.0. In the pre-compensation scheme, the best results are obtained as a maximum Q-factor of 9.2 and a minimum BER of 3.25 × 10–20, using a tanh apodization function. The proposed model realizes an improvement over the related work by at least ~ 68%.
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Jacobsen, Gunnar, Marisol Lidn, Tianhua Xu, Sergei Popov, Ari T. Friberg et Yimo Zhang. « Influence of Pre- and Post-compensation of Chromatic Dispersion on Equalization Enhanced Phase Noise in Coherent Multilevel Systems ». Journal of Optical Communications 32, no 4 (janvier 2011). http://dx.doi.org/10.1515/joc.2011.053.

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Mustafa, Fathy M., Asmaa Mohamed, Ashraf A. M. Khalaf, Ahmed F. Sayed et Moustafa H. Aly. « Dispersion compensation using cascaded apodized CFBGs under MTDM transmission technique : Enhanced system performance ». Optical and Quantum Electronics 55, no 1 (23 novembre 2022). http://dx.doi.org/10.1007/s11082-022-04132-6.

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AbstractThis study focuses on compensating chromatic dispersion affecting the propagated signal in a standard single mode optical fibers (SSMFs). We propose a model that consists of an identical four stages cascaded linear chirped apodized fiber Bragg gratings (CFBGs) in a post-compensation scheme under Maximum Time Division Multiplexing (MTDM) technique. MTDM is free of the limitations resulting from the fiber nonlinear effects. It, thus, effectively utilizes optical wavelength and operating in various network of different distances and capacities. Therefore, MTDM is designed to be used in the high-capacity and high-speed transmission systems. The evaluation of the proposed model performance is performed through a comparative study using different connections and the most common apodization functions. This comparative study includes three cases based on the used connection scheme. A 10 Gbps Wavelength Division Multiplexing (WDM) 70 km link is simulated under ordinary operating parameters. Optisystem 7.0 is used for the simulation and evaluation process, in terms of two metrics which are quality factor (Q-factor) and bit error rate (BER). In the pre-compensation scheme, the highest results are: Q-factor = 7.664 and BER = 8.99 × 10–15, using the raised cosine apodization function. Using the raised sine apodization in the post-compensation connection realizes the best performance: Q-factor = 8.58 and BER = 4.77 × 10–18. In the symmetrical-compensation scheme and using the raised sine apodization, the proposed model attains the highest Results: Q-factor = 7.49 and BER = 3.53 × 10–14. The proposed model achieves at least 92.6% improvement in BER and 3.75% in Q-factor over the related works. The study is a simulation work and is performed through Optisystem ver. 7.
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Thèses sur le sujet "Chromatic dispersion pre-compensation"

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Lidon, Maria Sol. « Digital Pre-compensation of Chromatic Dispersion in QPSK high speed telecom systems ». Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-51039.

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Chromatic dispersion (CD) is one of the most significant impairments in optical fiber communication systems. Since expensive and complex optical components are required to mitigate CD in the optical domain high-speed digital signal processing techniques are becoming an alternative to compensate electronically both non-linear and linear optical fiber degradations in the transmitter or receiver. This thesis investigates a new electronic dispersion compensation technique based on signal predistortion using an electro-optic modulator driven by signals previously filtered by a linear Finite Impulse Response filter. Moreover, since transmitter and local oscillator lasers phase noise has usually been assessedindependently without regard to the effect of chromatic dispersion on the phase noise in the system performance, a comparative study between pre- and postcompensation of chromatic dispersion influence on equalization enhanced phase noise (EEPN) in coherent multilevel systems is carried out. For that purpose, carrier phase estimation is implemented by a one-tap normalized least-meansquare filter. Simulations of chromatic dispersion equalization in the transmitter demonstrate that a 56-Gbit/s QPSK coherent system is able to compensate large amounts of fiber chromatic dispersion using a predistorting linear finite impulse response filter. Concerning impact of chromatic dispersion compensation on equalization enhanced phase noise, simulation results show for postcompensation scheme the local oscillator phase noise limits the EEPN influence in the system. However, when the CD equalization is performed in the transmitter, the transmitter laser phase noise is the limiting factor that determines the EEPN effect in the transmission system. Most of those constraints may be mitigated by performing CD compensation in optical domain in such a way that the EEPN influence could be neglected.
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WANG, HAOYI. « Towards Higher Speed Next Generation Passive Optical Networks ». Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2966343.

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Actes de conférences sur le sujet "Chromatic dispersion pre-compensation"

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Yu, Wenjing, MingYue Zhu, Jing Zhang, Hao Ying, Shaohua Hu et Kun Qiu. « Comparison of chromatic dispersion pre- and post-compensation with Kramers-Kronig receiver ». Dans 17th International Conference on Optical Communications and Networks (ICOCN2018), sous la direction de Zhaohui Li. SPIE, 2019. http://dx.doi.org/10.1117/12.2522918.

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Sun, Mingwei, Jiahao Huo, Wei Huangfu, Keping Long et Xian Zhou. « Digital Chromatic Dispersion Pre-compensation Using a Quasi-Linear Double-Side Electro-Absorption Modulated Laser (DS-EML) ». Dans Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C. : OSA, 2020. http://dx.doi.org/10.1364/cleopr.2020.c6f_4.

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Masuda, Akira, Shuto Yamamoto, Yoshiaki Sone, Shingo Kawai et Mitsunori Fukutoku. « 112-Gb/s C-band Transmission Using 4-Level/7-Level Coding PAM with Chromatic-Dispersion Pre-compensation under 25-GHz Bandwidth-Limitation ». Dans Optical Fiber Communication Conference. Washington, D.C. : OSA, 2017. http://dx.doi.org/10.1364/ofc.2017.w2a.52.

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Shimizu, Shimpei, Takayuki Kobayashi, Takushi Kazama, Takeshi Umeki, Masanori Nakamura, Koji Enbutsu, Ryoichi Kasahara et Yutaka Miyamoto. « 8-Tbps (20 × 400 Gbps) Unrepeated Transmission over 80 km with 2-THz PPLN-Based Phase-Sensitive Amplification Using Precise Chromatic Dispersion Pre-Compensation ». Dans 2021 European Conference on Optical Communication (ECOC). IEEE, 2021. http://dx.doi.org/10.1109/ecoc52684.2021.9605876.

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