{
  "annotation_id": "b27cae3b-cd73-4eb3-b072-bc103e80c0e9",
  "date_created": "2026-03-02T18:00:53.409000Z",
  "date_modified": "2026-03-02T18:00:53.409000Z",
  "file_hash": "d3b29e1346d1be16b568b268d354ae83e9f57a39f92193ab06cdb82c9fbc3773",
  "private": false,
  "record": {
    "abstract": "This letter presents a comparison of exact probability density function with\nthe Gaussian noise approximation in optically pre-amplified DPSK receivers with\noptical Mach-Zehnder interferometer demodulation (MZI) and balanced detection,\nincluding the impact of phase noise. It is found that the Gaussian noise\napproximation significantly over-estimates ASE-ASE beat noise in DPSK receivers\nwith balanced detection particularly when phase noise is negligible, compared\nto IM/DD receivers, ASE- amplified spontaneous emission. However, the Gaussian\nnoise approximation is still applicable for DPSK receivers with balanced\ndetection and the measured 3-dB advantage is predicted by the Gaussian noise\ndistribution.",
    "arxiv_id": "physics/0410029",
    "authors": [
      "Xiupu Zhang",
      "Zhenqian Qu",
      "Guodong Zhang",
      "Guangxue Yang"
    ],
    "categories": [
      "physics.optics"
    ],
    "title": "Applicability of Gaussian Noise Approximation for Optically   Pre-Amplified DPSK Receivers with Balanced Detection",
    "url": "https://arxiv.org/abs/physics/0410029"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "41b58cef-c93d-494d-9b03-305558a77970",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}