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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.18588 |
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| _version_ | 1866916630423928832 |
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| author | Hakimi, Amin Mousavi, S. Faezeh Askarpour, Amir Nader |
| author_facet | Hakimi, Amin Mousavi, S. Faezeh Askarpour, Amir Nader |
| contents | Mode division multiplexing (MDM) systems leveraging spatial modes carrying orbital angular momentum (OAM) present a promising approach to enhance communication capacity in free-space and fiber-optic networks. Efficient detection of OAM modes is critical for their practical implementation. Spiral phase plates (SPPs) are low-cost optical elements with simple structures, capable of generating OAM waves with high conversion efficiency and precision. This makes the inverse-SPP a promising candidate for the detection of OAM modes. In this study, the performance of SPPs as OAM detectors is thoroughly analyzed. Key parameters, including efficiency, crosstalk, and signal-to-interference ratio, are examined through analytical and numerical methods. Results demonstrate that an inverse-SPP, combined with an optimized propagation length and aperture size, enables effective and precise OAM detection operation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_18588 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Detection of Orbital Angular Momentum Modes via Spiral Phase Plate Hakimi, Amin Mousavi, S. Faezeh Askarpour, Amir Nader Optics Mode division multiplexing (MDM) systems leveraging spatial modes carrying orbital angular momentum (OAM) present a promising approach to enhance communication capacity in free-space and fiber-optic networks. Efficient detection of OAM modes is critical for their practical implementation. Spiral phase plates (SPPs) are low-cost optical elements with simple structures, capable of generating OAM waves with high conversion efficiency and precision. This makes the inverse-SPP a promising candidate for the detection of OAM modes. In this study, the performance of SPPs as OAM detectors is thoroughly analyzed. Key parameters, including efficiency, crosstalk, and signal-to-interference ratio, are examined through analytical and numerical methods. Results demonstrate that an inverse-SPP, combined with an optimized propagation length and aperture size, enables effective and precise OAM detection operation. |
| title | Detection of Orbital Angular Momentum Modes via Spiral Phase Plate |
| topic | Optics |
| url | https://arxiv.org/abs/2502.18588 |