{
  "annotation_id": "286edd1f-e589-418b-9229-2ccbc2c3f4e2",
  "date_created": "2026-03-02T18:00:50.261000Z",
  "date_modified": "2026-03-02T18:00:50.261000Z",
  "file_hash": "815b2efb2cc2b4d201b59ebeb807d63c51b664e20d3d17dc418e8bb80463973e",
  "private": false,
  "record": {
    "abstract": "We consider an air-silica honeycomb lattice and demonstrate a new approach to\nthe formation of a core defect. Typically, a high or low-index core is formed\nby adding a high-index region or an additional air-hole (or other low-index\nmaterial) to the lattice, but here we discuss how a core defect can be formed\nby manipulating the cladding region rather than the core region itself.\nGermanium-doping of the honeycomb lattice has recently been suggested for the\nformation of a photonic band-gap guiding silica-core and here we experimentally\ndemonstrate how an index-guiding silica-core can be formed by fluorine-doping\nof the honeycomb lattice.",
    "arxiv_id": "physics/0401156",
    "authors": [
      "N. A. Mortensen",
      "M. D. Nielsen",
      "J. R. Folkenberg",
      "C. Jakobsen",
      "H. R. Simonsen"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OPEX.12.000468",
    "journal_ref": "Opt. Express 12, 468 (2004).",
    "title": "Photonic crystal fiber with a hybrid honeycomb cladding",
    "url": "https://arxiv.org/abs/physics/0401156"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "50700273-08c2-41ac-9770-1c1d1366f979",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}