{
  "abstract": "We propose and demonstrate lithium niobate on insulator (LNOI) microring resonators that are verticallycoupled to index-matched silicon-rich silicon nitride (SiN x ) access waveguides as an alternative to conventional lateral coupling schemes for integrated photonics applications. The wafer-scalable fabrication process involves a planarization step exploiting a single-step and reproducible spin-coating of a SU-8 epoxy spacer layer which allows a controlled separation to be established between the resonator and its access waveguide. The resulting multimode and single-mode microring resonators exhibit, for their fundamental TE 0 mode, intrinsic quality factors of 4.0 x 10 5 and 3.4 x 10 5 , respectively.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.09683",
  "author_total": 7,
  "authors": [
    {
      "name": "Clément Selva"
    },
    {
      "name": "Sarah Umme Tabassum"
    },
    {
      "name": "Kumar Kinjalk"
    },
    {
      "name": "Adrian Laborde"
    },
    {
      "name": "Antoine Monmayrant"
    },
    {
      "name": "Olivier Gauthier-Lafaye"
    },
    {
      "name": "Stéphane Calvez"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/atw7tpzkkq5g4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.09683",
  "fulltext_url": null,
  "id": "atw7tpzkkq5g4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.09683",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.09683",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/atw7tpzkkq5g4.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T06:21:04Z",
      "native_id": "2611.09683",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.09683"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Vertically-coupled microring resonators for lithium niobate on insulator integrated photonics",
  "title_text": "Vertically-coupled microring resonators for lithium niobate on insulator integrated photonics",
  "type": "preprint",
  "updated_at": "2026-11-10T06:21:04Z",
  "url": "https://research.draconitic.com/paper/atw7tpzkkq5g4",
  "venue": "arXiv",
  "versions": []
}