Researchers at NIST and the Joint Quantum Institute have demonstrated an optical microchip that could support portable precision clocks and navigation where GPS signals are unavailable or disrupted.
A smaller ruler for light
The device produces a frequency comb: evenly spaced optical frequencies used to make accurate measurements. Its design circulates light from two lasers through a tiny ring, reducing reliance on bulky, power-hungry equipment used by earlier approaches.
Potential applications
More portable optical clocks could help vehicles maintain navigation in difficult environments. NIST also identifies applications in resource exploration. The announcement describes a research demonstration and potential uses, rather than a finished navigation product.
Fabrication wafers contain more than 400 chips, with as many as 300 ring resonators on each chip.
Adapted from NIST's October 16, 2026 announcement. Photo: Grégory Moille/JQI, NIST. Site publication: 2026-10-27T13:17:18+08:00.
