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With the growing demand for high-speed online services and data-driven applications, the optical communication research community has turned its attention to utilizing the orbital angular momentum (OAM) of light for high-capacity data transmission through optical fibers. Among the promising advancements in this area are specialized OAM fibers, which offer a viable pathway for supporting stable and high-throughput OAM channels. This chapter introduces a novel type of OAM-supporting fiber: the inverse raised cosine few-mode fiber (IRCFMF). We explore its design methodology, optimization techniques, and performance across key parameters such as mode separation, differential group delay, chromatic dispersion, nonlinear behavior, resistance to mode coupling under perturbations, and bending tolerance. This chapter consolidates all our IRC-FMF analysis findings, aiming to provide the research community with a solid foundation for future developments and innovations involving this new class of OAM fibers.

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Towards Next-Generation OAM Fibers: Inverse Raised Cosine Few-Mode Fiber: Design and Performance Evaluation

  • 章节

  • 发表日期：

    2026年

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  • Alaaeddine Rjeb,
  • Hussein Seleem,
  • Habib Fathallah,
  • Mohsen Machhout

摘要

With the growing demand for high-speed online services and data-driven applications, the optical communication research community has turned its attention to utilizing the orbital angular momentum (OAM) of light for high-capacity data transmission through optical fibers. Among the promising advancements in this area are specialized OAM fibers, which offer a viable pathway for supporting stable and high-throughput OAM channels. This chapter introduces a novel type of OAM-supporting fiber: the inverse raised cosine few-mode fiber (IRCFMF). We explore its design methodology, optimization techniques, and performance across key parameters such as mode separation, differential group delay, chromatic dispersion, nonlinear behavior, resistance to mode coupling under perturbations, and bending tolerance. This chapter consolidates all our IRC-FMF analysis findings, aiming to provide the research community with a solid foundation for future developments and innovations involving this new class of OAM fibers.