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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| Accès en ligne: | https://arxiv.org/abs/2511.16493 |
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| _version_ | 1866912733976330240 |
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| author | Inampudi, Anantha Kedar Sarma R, Anjali A Ganguly, Pranabendu De, Syamsundar |
| author_facet | Inampudi, Anantha Kedar Sarma R, Anjali A Ganguly, Pranabendu De, Syamsundar |
| contents | Optical phased arrays (OPAs) are a promising technology for realizing fast and on-chip non-mechanical beam steering. In this work, we propose and analyze the performance of a non-uniformly spaced antenna arrangement based on the Fibonacci Spiral. A unique prime-number-based parameterization for antenna positioning and a tunable positional-control parameter ($α$) are introduced. We show that, depending on the intended application of the OPA, by adjusting $α$, we can achieve $\approx$ 56,562 resolvable points with 93 antennas arranged according to the prime-parametrization. To the best of our knowledge, this result exceeds the reported values in existing literature for comparable non-redundant array configurations. We analyze the robustness of this design by evaluating the sensitivities of the three key performance metrics of an OPA: side-lobe suppression ratio (SLSR), field of view (FoV), and the far-field full width at half-maximum (FWHM), to the random disturbances in antenna positions that may occur for practical implementation on a photonic chip. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_16493 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Performance Analysis of a Prime-Parameterized Fibonacci Spiral-Based Optical Phased Array Inampudi, Anantha Kedar Sarma R, Anjali A Ganguly, Pranabendu De, Syamsundar Optics Optical phased arrays (OPAs) are a promising technology for realizing fast and on-chip non-mechanical beam steering. In this work, we propose and analyze the performance of a non-uniformly spaced antenna arrangement based on the Fibonacci Spiral. A unique prime-number-based parameterization for antenna positioning and a tunable positional-control parameter ($α$) are introduced. We show that, depending on the intended application of the OPA, by adjusting $α$, we can achieve $\approx$ 56,562 resolvable points with 93 antennas arranged according to the prime-parametrization. To the best of our knowledge, this result exceeds the reported values in existing literature for comparable non-redundant array configurations. We analyze the robustness of this design by evaluating the sensitivities of the three key performance metrics of an OPA: side-lobe suppression ratio (SLSR), field of view (FoV), and the far-field full width at half-maximum (FWHM), to the random disturbances in antenna positions that may occur for practical implementation on a photonic chip. |
| title | Performance Analysis of a Prime-Parameterized Fibonacci Spiral-Based Optical Phased Array |
| topic | Optics |
| url | https://arxiv.org/abs/2511.16493 |