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<p>The fiber optic communication system delivers long-range connectivity, high-speed, and integrates with efficient data transmission for contemporary applications, causing signal distortion and limiting transmission distance. Chromatic dispersion (CD) represents a significant challenge in high-speed transmission. This research offers an in-depth analysis of dispersion compensation techniques, focusing specifically on cascaded Fiber Bragg Gratings (FBGs) combined with duo-binary modulation schemes. The review explores fundamental dispersion characteristics and provides a comprehensive comparative analysis of recent cascaded FBG-based compensation strategies, establishing them as optimal solutions for next-generation optical communication systems. The reviewed compensation techniques demonstrate significant performance improvements, where the systems employing four-stage cascaded FBGs with tanh apodization in pre-compensation schemes achieved a Q-factor of 8.964 and BER of 1.3 × 10⁻¹⁹ over 100&#xa0;km, while post-compensation with raised sine apodization yielded a Q-factor of 8.58 and BER of 4.77 × 10⁻¹⁸ over 70&#xa0;km. These advanced configurations demonstrate approximately 99% performance improvement over conventional compensation methods, enabling transmission distances up to 2700&#xa0;km in DWDM systems.</p>

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A survey on chromatic dispersion compensation techniques using cascaded Fiber Bragg Gratings (FBGs) combined with a duo-binary modulation scheme

  • 期刊论文

  • 发表日期：

    2025年12月20日

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  • Suaad Sahib Hindal

摘要

The fiber optic communication system delivers long-range connectivity, high-speed, and integrates with efficient data transmission for contemporary applications, causing signal distortion and limiting transmission distance. Chromatic dispersion (CD) represents a significant challenge in high-speed transmission. This research offers an in-depth analysis of dispersion compensation techniques, focusing specifically on cascaded Fiber Bragg Gratings (FBGs) combined with duo-binary modulation schemes. The review explores fundamental dispersion characteristics and provides a comprehensive comparative analysis of recent cascaded FBG-based compensation strategies, establishing them as optimal solutions for next-generation optical communication systems. The reviewed compensation techniques demonstrate significant performance improvements, where the systems employing four-stage cascaded FBGs with tanh apodization in pre-compensation schemes achieved a Q-factor of 8.964 and BER of 1.3 × 10⁻¹⁹ over 100 km, while post-compensation with raised sine apodization yielded a Q-factor of 8.58 and BER of 4.77 × 10⁻¹⁸ over 70 km. These advanced configurations demonstrate approximately 99% performance improvement over conventional compensation methods, enabling transmission distances up to 2700 km in DWDM systems.