{
  "abstract": "Efficient acousto-optic transduction in compact multilayer platforms requires the coexistence of a spectrally confined optical resonance and a mechanically responsive acoustic mode with strong spatial and spectral overlap. In this work, a shared-geometry one-dimensional phoxonic multilayer is numerically investigated for enhanced photoelastic readout through defect-mediated optical–acoustic coupling. The proposed architecture consists of a responsive central defect layer embedded between reversed periodic bilayers, with optical and longitudinal acoustic characteristics modeled using transfer-matrix formulations. Candidate structures are screened based on the formation of localized defect states within the corresponding optical and acoustic Bloch stop bands, while a first-order photoelastic model is applied to quantify the conversion of acoustic strain into optical resonance modulation. The optimized configuration, consisting of five bilayers on each side of a 494.13 nm defect layer, supports an optical defect resonance at 1521.83 nm with a quality factor of 1.51 × 104 and an acoustic defect mode at 3.22425 GHz with a quality factor of 833.2. The predicted displacement sensitivity reaches 2.724 pm/nm, corresponding to a strain sensitivity of 0.409 pm/µε. Field-energy analysis demonstrates simultaneous localization of optical and acoustic modes within the defect cavity, while frequency-domain calculations reveal a 21.67-fold enhancement of the first-order photoelastic response when the acoustic excitation is resonantly matched to the defect mode. Further assessments, including defect-free reference structures, deterministic thickness perturbations, passive-loss evaluations, and Monte Carlo parameter analysis, characterize resonance robustness, fabrication-related variability, and the consistency of the proposed transduction mechanism. These results establish a calibration-aware numerical framework for designing compact one-dimensional phoxonic structures with enhanced defect-assisted acousto-optic readout capabilities.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "name": "Arafa H. Aly"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dp4k21wj0avc9.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-72367-4",
  "fulltext_url": "https://doi.org/10.1038/s41598-026-72367-4",
  "id": "dp4k21wj0avc9",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://www.nature.com/articles/s41598-026-72367-4",
  "language": "en",
  "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": [
    [
      "lcc",
      "Q"
    ],
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      "lcc",
      "R"
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    [
      "openalex",
      "3107|Optical and Acousto-Optic Technologies"
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  "openalex": "W7223362199",
  "pdf_url": "https://www.nature.com/articles/s41598-026-72367-4.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/dp4k21wj0avc9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:33Z",
      "native_id": "10.1038/s41598-026-72367-4",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41598-026-72367-4"
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    {
      "first_seen": "2026-10-30T13:45:56Z",
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      "url": "https://doi.org/10.1038/s41598-026-72367-4"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Optical and Acousto-Optic Technologies",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Co-localized optical and acoustic defect modes enable resonantly enhanced photoelastic readout in a one-dimensional phoxonic multilayer",
  "title_text": "Co-localized optical and acoustic defect modes enable resonantly enhanced photoelastic readout in a one-dimensional phoxonic multilayer",
  "type": "peer-reviewed",
  "updated_at": "2026-10-31T14:20:44Z",
  "url": "https://research.draconitic.com/paper/dp4k21wj0avc9",
  "venue": "Scientific Reports",
  "versions": []
}