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    "headline": "Two Lasers Became Twenty Comb Lines",
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    "dek": "A three-stage nonlinear-fiber design generated a 50-gigahertz-spaced optical frequency comb.",
    "summary": "A three-stage nonlinear-fiber design generated a 50-gigahertz-spaced optical frequency comb.",
    "body_text": "The modeled chain used four-wave mixing, pulse compression and a second nonlinear fiber. At the reported power and 0.2-kilometer first stage, it produced about 20 lines with plus or minus 4.785-decibel flatness.",
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    "tags": [
      "photonics",
      "frequency combs",
      "fiber optics"
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    {
      "source_id": "source-2026-08-03-021",
      "title": "Journal of Optical Communications: nonlinear-fiber optical frequency comb",
      "publisher": "De Gruyter",
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    "title": "Two Lasers Became Twenty Comb Lines",
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