{
  "abstract": "High-speed operation for upstream passive optical network (PON) applications enabled by bias-controlled operation of silicon photonics integrated semiconductor optical amplifiers (SOA) is demonstrated in a continuous-mode back-to-back configuration. The InP-based C-band SOAs are heterogeneously integrated onto a 400 nm thick silicon waveguide using micro-transfer printing technology. Optimized apodized grating couplers are designed and incorporated to minimize fiber-to-chip coupling loss (2.5 dB). The integrated SOAs exhibit small-signal on-chip gains of 15–17 dB at a bias current of 120 mA. When the integrated SOA is employed as a receiver-side preamplifier in a 100 Gb/s four-level pulse-amplitude modulation (PAM-4) upstream PON application, bias optimization across received power levels extends the SOA operating input power range to 22 dB while mitigating pattern-dependent distortion arising from SOA gain saturation. A minimum SOA input power of −23 dBm is achieved at the hard-decision forward error-correction threshold, referenced to the on-chip SOA input and excluding input grating-coupler loss. These results demonstrate the potential of heterogeneously integrated, bias-controlled SOAs as compact preamplifiers for extending the operating input power range of next-generation high-speed upstream PON receivers.",
  "abstract_shown": true,
  "affiliations": [
    "Munster Technological University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 11,
  "authors": [
    {
      "name": "Samir Ghosh",
      "orcid": "0000-0003-1540-0034"
    },
    {
      "name": "Fariba Jamali",
      "orcid": "0000-0003-0241-8649"
    },
    {
      "name": "Owen Moynihan"
    },
    {
      "affs": [
        0
      ],
      "name": "Artem S. Vorobev",
      "orcid": "0000-0002-3642-5225"
    },
    {
      "affs": [
        0
      ],
      "name": "Chinna Devarapu"
    },
    {
      "name": "Cleitus Antony",
      "orcid": "0000-0003-0466-8115"
    },
    {
      "name": "Kevin Thomas"
    },
    {
      "name": "Emanuele Pelucchi",
      "orcid": "0000-0001-7682-0601"
    },
    {
      "affs": [
        0
      ],
      "name": "Liam O’Faolain"
    },
    {
      "name": "Paul Townsend",
      "orcid": "0000-0001-6373-2872"
    },
    {
      "name": "Brian Corbett",
      "orcid": "0000-0002-9002-8212"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/30qrxcgbjjcyz.bib",
  "cited_by": 0,
  "doi": "10.1364/oe.614704",
  "fulltext_url": null,
  "id": "30qrxcgbjjcyz",
  "issns": [
    "1094-4087"
  ],
  "landing_url": "https://opg.optica.org/abstract.cfm?URI=oe-34-21-39718",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Advanced Photonic Communication Systems"
    ]
  ],
  "openalex": "W7220973996",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": "Optica Publishing Group",
  "ris": "https://research.draconitic.com/paper/30qrxcgbjjcyz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:09Z",
      "native_id": "10.1364/oe.614704",
      "source": "crossref",
      "url": "https://opg.optica.org/abstract.cfm?URI=oe-34-21-39718"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "issn:1094-4087",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Integrated gain-controlled semiconductor optical amplifier for input-power range extension in 100 Gb/s upstream PON receiver applications",
  "title_text": "Integrated gain-controlled semiconductor optical amplifier for input-power range extension in 100 Gb/s upstream PON receiver applications",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:09Z",
  "url": "https://research.draconitic.com/paper/30qrxcgbjjcyz",
  "venue": "Optics Express",
  "versions": []
}