{
  "abstract": "A polymeric platform for high-performance coupling to whispering gallery modes of silica microresonators is proposed and validated. The system is based on a low-refractive-index ridge waveguide fabricated with widely used SU8 and PDMS optical polymers. The waveguide is integrated with grating couplers for a simple fiber-to-chip connection. The coupling capabilities of the proposed platform were characterized using microsphere and microbubble resonators of different sizes. The experimental results demonstrate coupling efficiency in excess of 99% with microsphere and microbubble resonators having intrinsic quality factors in excess of 107 and 106, respectively. This performance is comparable with conventional fiber taper couplers and enables simple on-chip packaging of silica microresonators.",
  "abstract_shown": true,
  "affiliations": [
    "Institute for Electromagnetic Sensing of the Environment (IREA), National Research Council of Italy (CNR), 80124 Napoli, Italy",
    "Institute of Applied Physics “Nello Carrara” (IFAC), National Research Council of Italy (CNR), 50019 Sesto Fiorentino, Italy"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Gianluca Persichetti",
      "orcid": "0000-0001-8424-9791"
    },
    {
      "affs": [
        0
      ],
      "name": "Vito Coviello",
      "orcid": "0000-0001-8942-4026"
    },
    {
      "affs": [
        1
      ],
      "name": "Daniele Farnesi",
      "orcid": "0000-0001-8439-0453"
    },
    {
      "affs": [
        1
      ],
      "name": "Gabriele Frigenti",
      "orcid": "0000-0002-4290-3158"
    },
    {
      "affs": [
        1
      ],
      "name": "Stefano Pelli",
      "orcid": "0000-0002-6960-5003"
    },
    {
      "affs": [
        0
      ],
      "name": "Genni Testa",
      "orcid": "0000-0003-1205-5781"
    },
    {
      "affs": [
        1
      ],
      "name": "Gualtiero Nunzi Conti",
      "orcid": "0000-0002-2239-7622"
    },
    {
      "affs": [
        0
      ],
      "name": "Romeo Bernini",
      "orcid": "0000-0003-0300-4384"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6devkk491dx2x.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18202581",
  "fulltext_url": "https://europepmc.org/articles/PMC13708915",
  "id": "6devkk491dx2x",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/20/2581",
  "language": "eng",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Photonic and Optical Devices"
    ]
  ],
  "openalex": "W7223057396",
  "pdf_url": "https://europepmc.org/articles/PMC13708915?pdf=render",
  "pmcid": "PMC13708915",
  "pmid": "42942702",
  "published": "2026-10-20",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/6devkk491dx2x.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:44Z",
      "native_id": "10.3390/polym18202581",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/20/2581"
    },
    {
      "first_seen": "2026-10-30T12:22:12Z",
      "native_id": "MED:42942702",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42942702"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "A Polymeric Platform for Whispering Gallery Modes Silica Microresonators Coupling",
  "title_text": "A Polymeric Platform for Whispering Gallery Modes Silica Microresonators Coupling",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:22:12Z",
  "url": "https://research.draconitic.com/paper/6devkk491dx2x",
  "venue": "Polymers",
  "versions": []
}