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<p>This paper presents the design, simulation, and performance analysis of an 8-channel wavelength division multiplexing radio over fiber (WDM-RoF) system, developed to support the high-capacity demands of next-generation 5G networks and mobile systems. Each channel operates at a data rate of 12 Gbps, with 10&#xa0;nm spacing across the L + U band (1585–1655&#xa0;nm). The system’s performance was evaluated across input optical powers, from − 25 to 25 dBm, using key indicators such as bit error rate (BER), Q-factor, and eye diagram clarity. Simulations, carried out using OptiSystem software, show that the system achieves optimal performance at an input power of − 10 dBm, delivering a BER as low as 1 × 10⁻²⁹ and a Q-factor of 11.16. To further enhance signal quality, the design incorporates a finely tuned erbium-doped fiber amplifier (EDFA). The amplifier’s parameters—including fiber length, pump power, and doping concentration—were optimized to ensure high efficiency and broad wavelength support. The final configuration achieved a signal gain of up to 35.5 dB at 1605&#xa0;nm. It maintained a low noise figure of approximately 3.75 dB at 1645&#xa0;nm, using a 10&#xa0;m EDF, 250 mW pump power, and a doping concentration of 100 × 10²⁴ ions/m³, enabling a maximum reach distance of 90&#xa0;km at 12 Gbps. However, used DPSK modulation was improve the system, to achieve a Q-factor of approximately 40.3 and a very low BER, with maximum reach distance of 220&#xa0;km at 12 Gbps achieving 6.8 Q-factor. The results confirm that the proposed WDM-RoF system is capable of high-speed, long-distance optical signal transmission, making it a strong candidate for future 5G and beyond applications.</p>

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Optimized wideband erbium doped fiber amplifier for WDM-ROF communication system for 5G application

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • Jaafar Jalil Shakier,
  • M. H. Ali,
  • Arwa A. Moosa

摘要

This paper presents the design, simulation, and performance analysis of an 8-channel wavelength division multiplexing radio over fiber (WDM-RoF) system, developed to support the high-capacity demands of next-generation 5G networks and mobile systems. Each channel operates at a data rate of 12 Gbps, with 10 nm spacing across the L + U band (1585–1655 nm). The system’s performance was evaluated across input optical powers, from − 25 to 25 dBm, using key indicators such as bit error rate (BER), Q-factor, and eye diagram clarity. Simulations, carried out using OptiSystem software, show that the system achieves optimal performance at an input power of − 10 dBm, delivering a BER as low as 1 × 10⁻²⁹ and a Q-factor of 11.16. To further enhance signal quality, the design incorporates a finely tuned erbium-doped fiber amplifier (EDFA). The amplifier’s parameters—including fiber length, pump power, and doping concentration—were optimized to ensure high efficiency and broad wavelength support. The final configuration achieved a signal gain of up to 35.5 dB at 1605 nm. It maintained a low noise figure of approximately 3.75 dB at 1645 nm, using a 10 m EDF, 250 mW pump power, and a doping concentration of 100 × 10²⁴ ions/m³, enabling a maximum reach distance of 90 km at 12 Gbps. However, used DPSK modulation was improve the system, to achieve a Q-factor of approximately 40.3 and a very low BER, with maximum reach distance of 220 km at 12 Gbps achieving 6.8 Q-factor. The results confirm that the proposed WDM-RoF system is capable of high-speed, long-distance optical signal transmission, making it a strong candidate for future 5G and beyond applications.