{
  "annotation_id": "bb9625eb-2982-4090-b4a6-d3826a2323f3",
  "date_created": "2026-02-17T05:53:07.771000Z",
  "date_modified": "2026-02-17T05:53:07.771000Z",
  "file_hash": "4eae097bd4b4d072c0986e75b16a0200423f7bc1285e22d156b9c33db2c3568f",
  "private": false,
  "record": {
    "abstract": "We report a comprehensive experimental study of spontaneous Brillouin scattering in a few-mode optical fiber, resolving both forward and backward scattering processes for intra- and inter-modal interactions. Using heterodyne detection, Stokes and anti-Stokes components without external acoustic excitation are observed and quantitatively extracted Brillouin shifts, linewidths, and gain coefficients. Forward scattering is mediated by guided torsional-radial acoustic modes with frequencies ranging from MHz to GHz, while backward scattering involves longitudinal core-guided modes at frequencies of tens of GHz. These results provide calibrated benchmarks for Brillouin interactions in few-mode fibers, offering insights relevant to phonon-based quantum applications and mode-selective optomechanics.",
    "arxiv_id": "2601.06569",
    "authors": [
      "Hikari Kikuchi",
      "Rekishu Yamazaki"
    ],
    "categories": [
      "physics.optics",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "Spontaneous Brillouin Scattering in a Few-Mode Optical Fiber",
    "url": "https://arxiv.org/abs/2601.06569",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "862b352a-53ca-46e8-acac-d87da58f8aec",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}