{
  "abstract": "Optical waveguide amplifiers are vital for on-chip loss compensation in photonic integrated circuits (PICs). Although C-band waveguide amplifiers have been widely studied, achieving high gain remains a considerable challenge. In this work, we present a gain-enhancement strategy based on core-shell nanoparticles (NPs) co-doped with multiple rare-earth ions (NaYbF4:Er3+, Ce3+@NaYF4:Yb3+, Nd3+). Efficient energy transfer from Nd3+ to Yb3+ ions significantly boosts the downconversion emission of Er3+ ions. When incorporated into a polymer waveguide amplifier, these NPs enable a maximum measured relative gain of 11.62 dB at 1535 nm in a 0.8 cm-long device under dual-wavelength (808 and 976 nm) pumping, which is 3.18 dB higher than the highest relative gain obtained under 976 nm single-wavelength pumping. This approach provides a route to enhanced C-band amplification and offers a strategy for designing compact, multi-wavelength-pumped photonic devices.",
  "abstract_shown": true,
  "affiliations": [
    "State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, College of Integrated Circuits, Jilin University, Changchun 130012, China",
    "Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), School of Physics, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Material, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Changlong Li",
      "orcid": "0009-0005-5743-0882"
    },
    {
      "affs": [
        1
      ],
      "name": "Hong Liao"
    },
    {
      "affs": [
        0
      ],
      "name": "Guanlin Li",
      "orcid": "0009-0004-0122-5794"
    },
    {
      "affs": [
        0
      ],
      "name": "Zheng Wang"
    },
    {
      "affs": [
        1
      ],
      "name": "Kezhi Zheng"
    },
    {
      "affs": [
        0
      ],
      "name": "Fei Wang",
      "orcid": "0000-0003-2160-0809"
    },
    {
      "affs": [
        0
      ],
      "name": "Daming Zhang",
      "orcid": "0000-0002-5651-8699"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6mj19rzema71w.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212732",
  "fulltext_url": null,
  "id": "6mj19rzema71w",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2732",
  "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": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/6mj19rzema71w.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:21:00Z",
      "native_id": "10.3390/polym18212732",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2732"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Gain-Enhancement Strategy for C-Band Polymer Waveguide Amplifiers via Dual-Wavelength Pumping",
  "title_text": "Gain-Enhancement Strategy for C-Band Polymer Waveguide Amplifiers via Dual-Wavelength Pumping",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T00:20:53Z",
  "url": "https://research.draconitic.com/paper/6mj19rzema71w",
  "venue": "Polymers",
  "versions": []
}