{
  "annotation_id": "163cc54d-342e-4c57-8de3-dbe3d017f383",
  "date_created": "2026-03-02T18:00:46.551000Z",
  "date_modified": "2026-03-02T18:00:46.551000Z",
  "file_hash": "d5ac97b338c275b44a677375ccaef0f0dc4322dbbd16a2f6a4e213b963e83cac",
  "private": false,
  "record": {
    "abstract": "We numerically calculate the equivalent mode-field radius of the fundamental\nmode in a photonic crystal fiber (PCF) and show that this is a function of the\nV-parameter only and not the relative hole size. This dependency is similar to\nwhat is found for graded-index standard fibers and we furthermore show that the\nrelation for the PCF can be excellently approximated with the same general\nmathematical expression. This is to our knowledge the first semi-analytical\ndescription of the mode-field radius of a PCF.",
    "arxiv_id": "physics/0309030",
    "authors": [
      "M. D. Nielsen",
      "N. A. Mortensen",
      "J. R. Folkenberg",
      "A. Bjarklev"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.28.002309",
    "journal_ref": "Opt. Lett. 28, 2309 (2003)",
    "title": "Mode-Field Radius of Photonic Crystal Fibers Expressed by the   V-parameter",
    "url": "https://arxiv.org/abs/physics/0309030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e682e566-ff68-4ced-a59b-97f14f86b29f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}