Abstract
This work investigates a simulation model of an underwater optical wireless communication (UOWC) system. Several water scenarios are considered: Harbor I (HA-I), Harbor II (HA-II), Coastal Ocean (CO), Clear Ocean (CL), and Pure Sea (PU). A laser diode (LD) with modulation schemes (NRZ-OOK) transmits data at various speeds of 2.5 Gbps, 5 Gbps, and 10 Gbps. To identify the optical signal, a single-photon detection (SPD), APD and PIN photodiodes are utilized. The analytical evaluation of the performance is executed using Q-factor, received power and bit error rate (BER). According to the results, the PU achieved an underwater distance of 35.5 m, 35 m, 34.5 m, for data transmitted 2.5, 5 and 10 Gbps by SPD detector in succession with a Q-factor of 5.4 dB. The APD and PIN photodiodes acquired the distance less than the SPD detector. The APD and PIN photodetectors can detect the received signal under water type PU at 28 m and 23 m, respectively. The comparatively positive outcome indicates that a system utilizing single-photon detection (SPD) and an NRZ-OOK modulation method holds promise for long-distance underwater optical communication with high bandwidth.
Acknowledgments
The authors would like to thank Mustansiriyah University/College of Science for supporting this work in the physics department labs.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved 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 declare that they have no competing interests.
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Research funding: None declared.
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Data availability: The data used and/or analyzed during the current study are available from the corresponding author on reasonable request.
References
1. Sun, X, Kang, CH, Kong, M, Alkhazragi, O, Guo, Y, Ouhssain, M, et al.. A review on practical considerations and solutions in underwater wireless optical communication. J Lightwave Technol 2020;38:421–31. https://doi.org/10.1109/jlt.2019.2960131.Search in Google Scholar
2. Arnon, S. Underwater optical wireless communication network. Opt Eng 2010;49:015001. https://doi.org/10.1117/1.3280288.Search in Google Scholar
3. Huang, A, Tao, L, Niu, Y. Underwater wireless optical MIMO system with spatial modulation and adaptive power allocation. Opt Commun 2018;412:21–7. https://doi.org/10.1016/j.optcom.2017.12.006.Search in Google Scholar
4. Peppas, KP, Boucouvalas, AC, Ghassemloy, Z. Performance of underwater optical wireless communication with multi‐pulse pulse‐position modulation receivers and spatial diversity. IET Optoelectron 2017;11:180–5. https://doi.org/10.1049/iet-opt.2016.0130.Search in Google Scholar
5. Singh, M, Atieh, A. High data rate underwater optical wireless communication systems with ICSM codes within green spectrum. Opt Quant Electron 2025;57:1–22. https://doi.org/10.1007/s11082-025-08065-8.Search in Google Scholar
6. Alkareem, RASA, Dakhil, OAA, Ahmed, BM. Study of plasma parameters using different voltages in an Ar/O2 dielectric barrier discharge. In: AIP conference proceedings. AIP Publishing LLC; 2024, vol 3097:090024 p.10.1063/5.0209480Search in Google Scholar
7. Al-Deen, MB, Ali, MAA, Saleh, ZA. Improving the optical link for UVLC using MIMO technique. J Opt Commun 2021. https://doi.org/10.1515/joc-2021-0050.Search in Google Scholar
8. Khudhair, HA. Intelligent formation protocol: an approach for enhancing energy efficiency and network performance in wireless sensor networks. Al-Mustansiriyah J Sci 2025;36:46–55. https://doi.org/10.23851/mjs.v36i1.1573.Search in Google Scholar
9. Cossu, G, Corsini, R, Khalid, AM, Balestrino, S, Coppelli, A, Caiti, A, et al.. Experimental demonstration of high speed underwater visible light communications. In: 2nd International workshop on optical wireless communications (IWOW). IEEE; 2013:11–5 pp.10.1109/IWOW.2013.6777767Search in Google Scholar
10. Al-Zhrani, S, Bedaiwi, NM, El-Ramli, IF, Barasheed, AZ, Abduldaiem, A, Al-Hadeethi, Y, et al.. Underwater optical communications: a brief overview and recent developments. Eng Sci 2021;16:146–86. https://doi.org/10.30919/es8d574.Search in Google Scholar
11. Huang, Y-F, Tsai, C-T, Chi, Y-C, Huang, D-W, Lin, G-R. Filtered multicarrier OFDM encoding on blue laser diode for 14.8-Gbps seawater transmission. J Lightwave Technol 2017;36:1739–45. https://doi.org/10.1109/jlt.2017.2782840.Search in Google Scholar
12. Spagnolo, GS, Cozzella, L, Leccese, F. Underwater optical wireless communications: overview. Sensors (Switzerland) 2020;20. https://doi.org/10.3390/s20082261.Search in Google Scholar PubMed PubMed Central
13. Li, J, Ye, D, Fu, K, Wang, L, Piao, J, Wang, Y. Single-photon detection for MIMO underwater wireless optical communication enabled by arrayed LEDs and SiPMs. Opt Express 2021;29:25922–44. https://doi.org/10.1364/oe.433798.Search in Google Scholar PubMed
14. Liu, X, Yi, S, Zhou, X, Fang, Z, Qiu, ZJ, Hu, L, et al.. 34.5 m underwater optical wireless communication with 2.70 Gbps data rate based on a green laser diode with NRZ-OOK modulation. Opt Express 2017;25:27937–47. https://doi.org/10.1364/oe.25.027937.Search in Google Scholar
15. Chen, R, Du, J, Wang, Y, Fei, C, Zhang, T, Tian, J, et al.. Experimental demonstration of real-time optical DFT-S DMT signal transmission for a blue-LED-based UWOC system using spatial diversity reception. Appl Opt 2023;62:541–51. https://doi.org/10.1364/ao.478405.Search in Google Scholar
16. Al, MB, Roonak, D, Salam, A, Mazin, AA, Ali, AA. Transmission of 10 Gb/s for underwater optical wireless communication system. J Opt 2024. https://doi.org/10.1007/s12596-024-01825-x.Search in Google Scholar
17. El-Mottaleb, SAA, Singh, M, Atieh, A, Aly, MH. OCDMA transmission-based underwater wireless optical communication system: performance analysis. Opt Quant Electron 2023;55:465. https://doi.org/10.1007/s11082-023-04742-8.Search in Google Scholar
18. Schirripa Spagnolo, G, Cozzella, L, Leccese, F. Underwater optical wireless communications: overview. Sensors 2020;20:2261. https://doi.org/10.3390/s20082261.Search in Google Scholar
19. Bahaaldin Hayif, M, Ali, MAA, Saleh, ZA, Majeed, MF, Jaleel, QN. Transmission incoherent visible light for the MIMO-UWOC system. J Opt Commun 2025;5826:1–11. https://doi.org/10.1515/joc-2025-0077.Search in Google Scholar
20. Petzold, TJ. Volume scattering functions for selected ocean waters. No. SIOREF7278, 1972.10.21236/AD0753474Search in Google Scholar
21. Li YP, Xiao, Y, Peng, H, Wan, ZA, Jiang, GY, Yuan, JG, et al.. Experimental realization of underwater optical communication based on single photon detector. In: Seventh symposium on novel photoelectronic detection technology and applications. SPIE; 2021, vol XIVDCCLXIII, 916–20 pp.10.1117/12.2586532Search in Google Scholar
22. Arnon, S. Optimization of urban optical wireless communication systems. IEEE Trans Wireless Commun 2003;2:626–9. https://doi.org/10.1109/twc.2003.814351.Search in Google Scholar
23. Eisaman, MD, Fan, J, Migdall, A, Polyakov, SV. Invited review article: single-photon sources and detectors. Rev Sci Instrum 2011;82. https://doi.org/10.1063/1.3610677.Search in Google Scholar PubMed
24. Al-Din, MB, Ali, MAA, Saleh, ZA. Optical signal transmission for the visible light communication system through the water–air interface link. J Opt 2024. https://doi.org/10.1007/s12596-024-01727-y.Search in Google Scholar
25. Mikhlif, HM, Ali, MAA, Saleh, ZA. Underwater wireless optical communication: a case study of chlorophyll effect. J Opt Commun 2023;44:s1365–70. https://doi.org/10.1515/joc-2020-0139.Search in Google Scholar
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