{
  "abstract": "We numerically demonstrate an asymmetric corner-reflector uni-traveling-carrier waveguide photodiode (UTC-WGPD) that simultaneously suppresses optical back-reflection and breaks the bandwidth-responsivity trade-off. Off-center beam coupling introduces geometric asymmetry to eliminate retroreflection while maintaining efficient light trapping. 3D optoelectronic simulations reveal that at 1550 nm, a 15-μm^2 device exhibits a 275-GHz 3-dB bandwidth, 0.68-A/W responsivity (54.5% quantum efficiency), and -29-dB back-reflection, achieving a 150-GHz bandwidth-efficiency product. This design offers a scalable, low-reflection detection scheme for sub-terahertz transceivers and dense photonic integration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01138",
  "author_total": 4,
  "authors": [
    {
      "name": "Zhijun Zhang"
    },
    {
      "name": "Xuejie Gao"
    },
    {
      "name": "Qiunan Li"
    },
    {
      "name": "Xiaoyu Mi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/brz56nstvy2cw.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01138",
  "fulltext_url": null,
  "id": "brz56nstvy2cw",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01138",
  "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"
    ],
    [
      "arxiv",
      "physics.plasm-ph"
    ],
    [
      "openalex",
      "2208|Photonic and Optical Devices"
    ]
  ],
  "openalex": "W7206193566",
  "pdf_url": "https://arxiv.org/pdf/2609.01138",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/brz56nstvy2cw.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.01138",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01138"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "High-Speed and High-Responsivity Asymmetric Waveguide Photodiode with Low Optical Back-Reflection",
  "title_text": "High-Speed and High-Responsivity Asymmetric Waveguide Photodiode with Low Optical Back-Reflection",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/brz56nstvy2cw",
  "venue": "arXiv",
  "versions": []
}