Performance enhancement of Q factor and BER using Raman amplification in optical communication systems
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Keshav Kumar
Abstract
With growing needs of data transmission, optical fiber communication is a suitable option for higher bandwidth applications and less attenuation requirements. However, for long distance communication, signal degradation is a major issue including nonlinear effects. So, to resolve this challenge, optical amplifiers play a major role. In the proposed LR-PON system, a 10 Gb/s PRBS-modulated NRZ signal is transmitted from the optical line terminal (OLT) and propagated through an optical link of 100 km. The Raman pump is applied in a backward configuration to ensure a more uniform signal gain and reduced relative intensity noise transfer. Simulation results reveal that as the Raman pump power increases from 0 to 26 dBm, the received optical power improves significantly due to the distributed gain provided by the amplifier. Consequently, the Q-factor rises from approximately 5 to 12, while the corresponding bit error rate (BER) decreases from about 10−3 to 10−9. The improvement in Q-factor clearly demonstrates enhanced signal quality and reduced inter-symbol interference. The Raman amplification thus extends the PON reach without the need for additional active components in the distribution segment, maintaining the cost-efficiency and passive nature of the network.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: Not applicable.
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Data availability: Not applicable.
References
1. Liu, X. Evolution of fiber-optic transmission and networking toward the 5G era. iScience 2019;22:489–506. https://doi.org/10.1016/j.isci.2019.11.026.Search in Google Scholar PubMed PubMed Central
2. Agrell, E, Karlsson, M, Chraplyvy, A, Richardson, D, Krummrich, P, Winzer, P, et al.. Roadmap of optical communications. J Opt 2016;18:063002. https://doi.org/10.1088/2040-8978/18/6/063002.Search in Google Scholar
3. Khant, S, Makwana, M, Patel, A, Patel, D. Performance enhancement in terms of BER and data rate of next generation optical networking system using Raman amplifier. In 2025 3rd international conference on integrated circuits and communication systems (ICICACS). Raichur, India: IEEE; 2025:1–7 pp.10.1109/ICICACS65178.2025.10967577Search in Google Scholar
4. Eid, MM, Shehata, E, Rashed, AN. Cascaded stages of parametric optical fiber amplifiers with Raman fiber amplifiers for upgrading of telecommunication networks through optical wireless communication channel. J Opt Commun 2025;45:s219–26. https://doi.org/10.1515/joc-2020-0279.Search in Google Scholar
5. Cantono, M, Ferrari, A, Pilori, D, Virgillito, E, Augé, JL, Curri, V. Physical layer performance of multi-band optical line systems using Raman amplification. J Opt Commun Netw 2018;11:A103–10. https://doi.org/10.1364/jocn.11.00a103.Search in Google Scholar
6. Waseer, TA, Halepoto, IA, Joyo, MA. Quantifying the Q-factor and minimizing BER in 32-channel DWDM system design using EDFA and Raman amplifiers. Mehran Univ Res J Eng Technol 2014;33:1–8.Search in Google Scholar
7. Anis, AA, Rashidi, CB, Rahman, AK, Aljunid, SA, Ali, N. Analysis of the effect of BER and Q-factor on free space optical communication system using diverse wavelength technique.In EPJ web of conferences. Malaysia. EDP Sciences and Port Dickson; 2017, vol CLXII:01024 p. https://doi.org/10.1051/epjconf/201716201024.Search in Google Scholar
8. Islam, MN. Raman amplifiers for telecommunications. IEEE J Sel Top Quant Electron 2002;8:548–59. https://doi.org/10.1109/jstqe.2002.1016358.Search in Google Scholar
9. Ikhsan, R, Syahputra, RF, Saktioto. Okfalisa. Performance control of semiconductor optical amplifier and fiber Raman amplifier in communication system. In: 19th IEEE/ACIS international conference on software engineering, artificial intelligence, networking and parallel/distributed computing (SNPD). Busan, South Korea: IEEE; 2018:32–6 pp. https://doi.org/10.1109/snpd.2018.8441122 [Accessed 2018].Search in Google Scholar
10. Antony, C, Dalla Santa, M, Talli, G, Townsend, PD. Design and performance analysis of Raman amplified XG-PON system. J Lightwave Technol 2016;34:2692–701. https://doi.org/10.1109/jlt.2016.2553581.Search in Google Scholar
11. Ivaniga, T, Ivaniga, P. Comparison of the optical amplifiers EDFA and SOA based on the BER and Q‐factor in c‐band. Adv Opt Technol 2017;2017:9053582. https://doi.org/10.1155/2017/9053582.Search in Google Scholar
12. Makwana, M, Khant, S, Patel, A. Comprehensive performance analysis of next-generation high-speed WDM-PON type optical network with EDFA and Raman optical amplifier. International Journal of Microwave & Optical Technology 2025;20.Search in Google Scholar
13. Shahzadi, R, Shahzad, A, Qamar, F, Shahzadi, R, Ali, M. Effective refractive index and V-Parameter characterization for guided modes in multimode, nano and three layer optical. Fibers 2018;7:20–7.Search in Google Scholar
14. Piccolo, A, Delepine-Lesoille, S, Friedrich, E, Aziri, S, Lecieux, Y, Leduc, D. Mechanical properties of optical fiber strain sensing cables under γ-Ray irradiation and large strain influence. Sensors 2020;20:1–13. https://doi.org/10.3390/s20030696.Search in Google Scholar PubMed PubMed Central
15. Thakur, K, Sharma, N, Singh, J. Performance analysis of backward pumped Raman amplifier based DWDM system at 40Gb/s. In 2020 5th international conference on communication and electronics systems (ICCES). Coimbatore, India: IEEE; 2020: 47–51 pp.10.1109/ICCES48766.2020.9138017Search in Google Scholar
16. Elsayed, EE, Yousif, BB. Performance evaluation and enhancement of the modified OOK based IM/DD techniques for hybrid fiber/FSO communication over WDM-PON systems. Opt Quant Electron 2020;52:385. https://doi.org/10.1007/s11082-020-02497-0.Search in Google Scholar
17. Elsayed, EE. Performance enhancement in FSO relay systems with MISO via multi-hop M-ary PPM integrating and spatial modulation over gamma–gamma channels. J Opt 2024;54:3364–3379. https://doi.org/10.1007/s12596-024-01936-5.Search in Google Scholar
18. Elsayed, EE. Atmospheric turbulence mitigation of MIMO-RF/FSO DWDM communication systems using advanced diversity multiplexing with hybrid N-SM/OMI M-ary spatial pulse-position modulation schemes. Opt Commun 2024;562:130558. https://doi.org/10.1016/j.optcom.2024.130558.Search in Google Scholar
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