{
  "abstract": "Microcombs in normal-dispersion photonic crystal ring resonators (PhCRs) are versatile building blocks for next-generation integrated photonic circuits, but their inherent backward-propagation bias necessitates optical circulators or complex filtering for comb extraction, creating a significant bottleneck for full on-chip integration and precluding self-injection locking schemes. In this work, we introduce Side-mode Induced Forward Forcing (SIFF), a robust method to control and reverse this directionality. By engineering auxiliary mode splittings on resonances adjacent to the pump, we steer the nonlinear dynamics to favor stable, forward-propagating platicon states. We identify an optimal coupling condition that ensures forward-comb dominance across a wide parameter range. Our findings, validated numerically and experimentally, enable circulator-free, integrated normal-dispersion microcombs compatible with self-injection locking, offering a scalable architecture for compact telecommunications and sensing systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.21437",
  "author_total": 4,
  "authors": [
    {
      "name": "Erwan Lucas"
    },
    {
      "name": "Su-Peng Yu"
    },
    {
      "name": "Jizhao Zang"
    },
    {
      "name": "Scott B. Papp"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5e7kqckmpm82a.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.21437",
  "fulltext_url": null,
  "id": "5e7kqckmpm82a",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.21437",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "3107|Advanced Fiber Laser Technologies"
    ]
  ],
  "openalex": "W7165646980",
  "pdf_url": "https://arxiv.org/pdf/2606.21437",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5e7kqckmpm82a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:11Z",
      "native_id": "2606.21437",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.21437"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Induced Directional Switching of Platicon Microcombs in Photonic Crystal Ring Resonators",
  "title_text": "Induced Directional Switching of Platicon Microcombs in Photonic Crystal Ring Resonators",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:11Z",
  "url": "https://research.draconitic.com/paper/5e7kqckmpm82a",
  "venue": "arXiv",
  "versions": []
}