Fiber-Optic Communication System: Current Status and Future Prospects

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: closed (30 June 2025) | Viewed by 463

Special Issue Editors


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Guest Editor
1. Department of Telecommunications and Teleinformatics, Wroclaw University of Technology, Wybrzeze, Wyspianskiego 27, 50-370 Wroclaw, Poland
2. Faculty of Electronics, Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland
Interests: mid infrared photonics; light sources; modelling and design of photonic devices; DWDM systems
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Electronics and Teleinformatics, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland
Interests: optical networks; heuristics; evolutionary algorithms; fiber optic communication; optoelectronics

Special Issue Information

Dear Colleagues,

The ever-growing demand for high bandwidth in access networks has also stimulated intense research in other areas of telecommunications networking. Especially promising in terms of the quality of service and quality of transmissions are the technological solutions for telecommunications networks that rely on the application of optical fibers. This is the case mainly due to the low price, high reliability and high bandwidth that is available when utilizing optical fibers. Therefore, we invite contributions that report on the current status of technological development and future trends that are pertinent to fiber-optic communications systems. Potential contributions may contain the results of either theoretical or experimental investigations; papers that provide a review on recent progress in fiber-optic communication systems are also welcome. The topics of interest include, but are not limited to, the following:

  • Passive Optical Networks: recent advances in PON network design analysis, optimization and management.
  • Active Optical Networks: recent advances in AON network design analysis, optimization and management.
  • Dense Wavelength Division Multiplexing Networks: recent advances in DWDM network design analysis, optimization, and management; Open ROADM; SDN; NFV; and machine learning.
  • Cybersecurity of fiber-optic communication systems: vulnerabilities of fiber-optic communications systems including the identification, detection, prioritization and various other aspects of vulnerability management.
  • Power/energy consumption of fiber-optic communication systems: including either theoretical or experimental analysis.
  • Cloud and edge computing: the application of fiber-optic communications systems in cloud and edge computing.

We look forward to receiving your contributions. 

Prof. Dr. Slawomir Sujecki
Dr. Stanisław Kozdrowski
Guest Editors

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Keywords

  • PON
  • AON
  • DWDM
  • power consumption in optical networks
  • cybersecurity of optical networks
  • cloud computing
  • edge computing

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Published Papers (1 paper)

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Research

17 pages, 1198 KB  
Article
Delay-Aware Sleep Synchronization for Sustainable 6G-PON Broadband Access
by Yazan M. Allawi, Alaelddin F. Y. Mohammed, Eman M. Moneer and Lamia O. Widaa
Electronics 2025, 14(16), 3229; https://doi.org/10.3390/electronics14163229 - 14 Aug 2025
Viewed by 203
Abstract
Time Division Multiplexing Passive Optical Networks (TDM-PONs) serve as a key enabler for the evolution of broadband access network infrastructure. As TDM-PONs adapt to support 6G networks, reducing energy consumption becomes increasingly critical. Sleep modes have been widely adopted as an effective energy-saving [...] Read more.
Time Division Multiplexing Passive Optical Networks (TDM-PONs) serve as a key enabler for the evolution of broadband access network infrastructure. As TDM-PONs adapt to support 6G networks, reducing energy consumption becomes increasingly critical. Sleep modes have been widely adopted as an effective energy-saving solution. However, their use can introduce delays that compromise performance. This issue becomes especially problematic in 6G PONs, where ultra-low latency and stringent service requirements leave minimal tolerance for delay-related inefficiencies. In this paper, we propose a novel sleep synchronization mechanism for both single and multiple TDM-PONs, allowing Optical Network Units (ONUs) to join one or more sleep/wake-up groups based on the service type and delay tolerance. Our practical design framework incorporates delay-based grouping and existing sleep modes to address the operational complexities of multi-PON systems while remaining fully compatible with current PON standards. The simulation results show that our approach satisfies the requirements of delay-sensitive traffic and achieves up to 37% energy savings. Compared to baseline methods such as adaptive scheduling and fixed-interval cyclic sleep, it offers a 15–20% improvement in the energy–delay trade-off. These results demonstrate the potential for near-term deployment of 6G PONs and lay the foundation for more advanced, delay-aware energy management strategies in next-generation optical access networks. Full article
(This article belongs to the Special Issue Fiber-Optic Communication System: Current Status and Future Prospects)
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