Lightmatter Joins Open CPX MSA, Introduces the Industry's First Bidirectional CPX Optical Engine

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  "detected_at": "2026-09-17T10:01:00+00:00",
  "company": {
    "name": "Lightmatter",
    "domain": "lightmatter.co"
  },
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    "url": "https://www.prnewswire.com/news-releases/lightmatter-joins-open-cpx-msa-introduces-the-industrys-first-bidirectional-cpx-optical-engine-302881786.html",
    "title": "Lightmatter Joins Open CPX MSA, Introduces the Industry's First Bidirectional CPX Optical Engine",
    "excerpt": "By combining transmit and receive on a single fiber, Passage® L20 CPX halves the optical cabling in AI scale-up networks MOUNTAIN VIEW, Calif. , Sept. 17, 2026 /PRNewswire/ -- Lightmatter , the leader in photonic (super)computing, today announced that it has joined the Open CPX Multi-Source Agreement (MSA) and introduced the Passage L20 CPX, the industry's first Open CPX module for AI infrastructure with bidirectional (BiDi) optical link technology. The solution is powered by the Passage L20 optical engine, Lightmatter's near-package optics (NPO) platform, announced in March, delivering 6.4 terabits per second (Tbps) in a single socketed module while halving the fiber and connectors needed to support it. Fiber is becoming a hard limit on how fast AI clusters can be built. A conventional link transmits on one fiber and receives on a second. BiDi technology combines transmit and receive on a single fiber by assigning each direction its own wavelength of light. In a 512-GPU scale-up pod, Lightmatter's analysis in a recent tech brief shows that customers will save more than 200 miles of fiber, taking the pod from about 130,000 fibers to 65,000, with approximately 16,000 fewer connectors. Fewer connectors and cables mean fewer potential failure points. The reduction saves about 15 percent of total scale-up interconnect network cost, speeds deployment and simplifies fiber plant...",
    "product": "Passage L20 CPX",
    "summary": "Lightmatter introduced the Passage L20 CPX, the industry's first Open CPX module for AI infrastructure with bidirectional (BiDi) optical link technology.",
    "location": "Mountain View, California, USA",
    "planning": false,
    "confidence": 0.9,
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      "full_text": "the Passage L20 CPX, the industry's first Open CPX module for AI infrastructure with bidirectional (BiDi) optical link technology",
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      "release_type": "module"
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      "data"
    ],
    "published_at": "2026-09-17T10:01:00Z",
    "location_data": [
      {
        "city": "Mountain View",
        "state": "California",
        "region": "Northern America",
        "country": "United States",
        "continent": "Americas",
        "fuzzy_match": false
      }
    ],
    "effective_date": "2026-09-17",
    "article_sentence": "17, 2026 /PRNewswire/ -- Lightmatter , the leader in photonic (super)computing, today announced that it has joined the Open CPX Multi-Source Agreement (MSA) and introduced the Passage L20 CPX, the industry's first Open CPX module for AI infrastructure with bidirectional (BiDi) optical link technology."
  }
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