{"title":"Nano-router metasurface inverse design by multi-body shape optimization.","authors":"Licheng Wang, Xianjin Liu, Yuqi Peng, Jun-Jun Xiao","doi":"10.1364/OL.567547","DOIUrl":null,"url":null,"abstract":"<p><p>Color image sensors that utilize Bayer filters are inherently limited by their narrowband optical filtering characteristics, which significantly reduce their optical efficiency. The emergence of metasurfaces functioning as nano-routers offers a promising alternative. However, the design, fabrication, and integration of nanophotonic structures into optoelectronic conversion sensors pose considerable challenges. In this study, we address these issues by employing a shape-optimization method to inversely design an RGGB optical nano-router based on a multi-body nanostructure, effectively balancing structural complexity and computational cost. Our results demonstrate that the designed nano-router achieves peak collection efficiencies of 53% for red, 70% for green, and 47% for blue. Notably, the metasurface's structural cross-section is composed solely of elliptical elements, rendering it highly compatible with mainstream fabrication techniques and facilitating easier integration.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 15","pages":"4786-4789"},"PeriodicalIF":3.3000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.567547","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Color image sensors that utilize Bayer filters are inherently limited by their narrowband optical filtering characteristics, which significantly reduce their optical efficiency. The emergence of metasurfaces functioning as nano-routers offers a promising alternative. However, the design, fabrication, and integration of nanophotonic structures into optoelectronic conversion sensors pose considerable challenges. In this study, we address these issues by employing a shape-optimization method to inversely design an RGGB optical nano-router based on a multi-body nanostructure, effectively balancing structural complexity and computational cost. Our results demonstrate that the designed nano-router achieves peak collection efficiencies of 53% for red, 70% for green, and 47% for blue. Notably, the metasurface's structural cross-section is composed solely of elliptical elements, rendering it highly compatible with mainstream fabrication techniques and facilitating easier integration.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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