# Chinese team claims 3.2 Pb/s real-time optical transmission record

_Published Monday, October 26, 2026 at 11:06 AM EDT · Infrastructure, Science · Latest · Tier 2 — Notable_

![China Information and Communication Technologies Group — Primary](https://cdn.mos.cms.futurecdn.net/YkbQ6FaQKMZUoDz3pzPbp4-1920-80.jpg)

A Chinese research collaboration claims it transmitted data at 3.2 Pb/s in real time through 24-core optical fiber, improving on its earlier 2.5 Pb/s result. Tom's Hardware reported the finding, citing the Hubei provincial government website.

The test combined separate transmission paths within the fiber with transmission across the S, C and L optical bands. Researchers addressed interference between paths and differing requirements across those bands, using commercially compliant hardware architectures.

The result concerns real-time transmission rather than the highest laboratory throughput: experiments using advanced or experimental signal processing and laboratory equipment have reached 5.29 Pb/s across similar 24-core fiber. Deployment of the new system remains prospective.

## Sources

- [Tom's Hardware](https://www.tomshardware.com/networking/3-2-pb-s-real-time-optical-fiber-transfer-speed-world-record-claimed-by-chinese-team-speed-fast-enough-to-download-more-than-20-000-4k-movies-in-one-second)

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Canonical: https://techandbusiness.org/newswire/QCMWE5Y1WGeeGLjt63_QYS
Published: 2026-10-26T15:06:15.362Z
Story chronology: 2026-10-26T14:43:37.000Z
Retrieved: 2026-10-26T18:02:00.834Z
Publisher: Tech & Business (techandbusiness.org)