{
  "annotation_id": "59cfa968-c405-4ca4-a5aa-8296a74c4868",
  "date_created": "2026-03-02T18:01:17.961000Z",
  "date_modified": "2026-03-02T18:01:17.961000Z",
  "file_hash": "bbee38aed64aad78c700aa7cc83eb389f7f6997b166087011d822f553e794475",
  "private": false,
  "record": {
    "abstract": "Hollow-core holey fibers are promising candidates for low-loss guidance of\nlight in various applications, e.g., for the use in laser guide star adaptive\noptics systems in optical astronomy. We present an accurate and fast method for\nthe computation of light modes in arbitrarily shaped waveguides. Maxwell\u0027s\nequations are discretized using vectorial finite elements (FEM). We discuss how\nwe utilize concepts like adaptive grid refinement, higher-order finite\nelements, and transparent boundary conditions for the computation of leaky\nmodes in photonic crystal fibers. Further, we investigate the convergence\nbehavior of our methods. We employ our FEM solver to design hollow-core\nphotonic crystal fibers (HCPCF) whose cores are formed from 19 omitted cladding\nunit cells. We optimize the fiber geometry for minimal attenuation using\nmultidimensional optimization taking into account radiation loss (leaky modes).",
    "arxiv_id": "physics/0702165",
    "authors": [
      "J. Pomplun",
      "R. Holzl\u00f6hner",
      "S. Burger",
      "L. Zschiedrich",
      "F. Schmidt"
    ],
    "categories": [
      "physics.optics",
      "physics.comp-ph"
    ],
    "doi": "10.1117/12.700495",
    "journal_ref": "Proc. SPIE Vol. 6480 (2007) 64800M",
    "title": "FEM investigation of leaky modes in hollow core photonic crystal fibers",
    "url": "https://arxiv.org/abs/physics/0702165"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f5f76585-cc37-4019-8601-8fc92cf80ee1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}