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<p>This paper presents the optimization of a Double-Pass (DP) Erbium-Doped Fiber Amplifier (EDFA) to enhance the performance of wideband communication systems, L + U band. The Use of a DP-EDFA increases the gain by reflecting the signal back through the amplifier, allowing it to pass through the active medium multiple times. This configuration offers significant advantages, such as operating over a wideband range of 90 nm (L + U band). It achieves a high small signal gain up to 46 dB and maintains a low noise figure of 4 dB. The performance of the DP-EDFA was optimized by investigating the optimal DP-EDFA length and pump power. The results demonstrate that the optimized DP-EDFA configuration significantly enhanced both gain and noise figure performance using doping concentration of 100 <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2487_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="46" /> </InlineMediaObject> <EquationSource Format="TEX">\(\times \,10^{24}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>×</mo> <mspace width="0.166667em" /> <msup> <mn>10</mn> <mn>24</mn> </msup> </mrow> </math></EquationSource> </InlineEquation> ions/<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2487_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="21" /> </InlineMediaObject> <EquationSource Format="TEX">\({\text{m}}^{3}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mrow> <mtext>m</mtext> </mrow> <mn>3</mn> </msup> </math></EquationSource> </InlineEquation> and pump power of 150 mW. Additionally, system performance, including the Q-factor and bit error rate (BER), can be significantly improved, enabling longer communicating distances by utilizing 1480 nm pump wavelength with the high bandwidth DP-EDFA amplifier.</p>

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Performance investigation of DP-EDFA amplifier for L + U-band optical communication systems

  • 期刊论文

  • 发表日期：

    2025年2月3日

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  • Mudhafar Hussein Ali,
  • Arwa A. Moosa,
  • Omar Raad Kadhim,
  • Samar K. Ibrahim,
  • Malik A. Alsaedi,
  • Muwafaq Shyaa Alwan

摘要

This paper presents the optimization of a Double-Pass (DP) Erbium-Doped Fiber Amplifier (EDFA) to enhance the performance of wideband communication systems, L + U band. The Use of a DP-EDFA increases the gain by reflecting the signal back through the amplifier, allowing it to pass through the active medium multiple times. This configuration offers significant advantages, such as operating over a wideband range of 90 nm (L + U band). It achieves a high small signal gain up to 46 dB and maintains a low noise figure of 4 dB. The performance of the DP-EDFA was optimized by investigating the optimal DP-EDFA length and pump power. The results demonstrate that the optimized DP-EDFA configuration significantly enhanced both gain and noise figure performance using doping concentration of 100 \(\times \,10^{24}\) × 10 24 ions/ \({\text{m}}^{3}\) m 3 and pump power of 150 mW. Additionally, system performance, including the Q-factor and bit error rate (BER), can be significantly improved, enabling longer communicating distances by utilizing 1480 nm pump wavelength with the high bandwidth DP-EDFA amplifier.