{
  "annotation_id": "4b51ff22-edcc-467c-8c7d-f225b1a06a56",
  "date_created": "2026-03-02T18:00:39.616000Z",
  "date_modified": "2026-03-02T18:00:39.616000Z",
  "file_hash": "be0edb06501c778a0a5b643759813be408090fad13a723f0bda01983bdeda53d",
  "private": false,
  "record": {
    "abstract": "The transition from the near to the far field of the fundamental mode\nradiating out of a photonic crystal fiber is investigated experimentally and\ntheoretically. It is observed that the hexagonal shape of the near field\nrotates two times by pi/6 when moving into the far field, and eventually six\nsatellites form around a nearly gaussian far-field pattern. A semi-empirical\nmodel is proposed, based on describing the near field as a sum of seven\ngaussian distributions, which qualitatively explains all the observed phenomena\nand quantitatively predicts the relative intensity of the six satellites in the\nfar field.",
    "arxiv_id": "physics/0205074",
    "authors": [
      "Niels Asger Mortensen",
      "Jacob Riis Folkenberg"
    ],
    "categories": [
      "physics.optics",
      "cond-mat"
    ],
    "doi": "10.1364/OE.10.000475",
    "journal_ref": "Optics Express 10, 475 (2002)",
    "title": "Near-field to far-field transition of photonic crystal fibers:   symmetries and interference phenomena",
    "url": "https://arxiv.org/abs/physics/0205074"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "15ba8858-f945-4696-9cfd-81ee43e163a4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}