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GYROSCOPES

On-chip Earth spin detection

A monolithic chip-scale ring laser gyroscope based on both Brillouin and Sagnac effects provides a sensitivity sufficient to measure sinusoidal rotations with an amplitude as small as 5 degrees per hour, thus enabling the first on-chip Earth rotation measurement.

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Fig. 1: The photonic chip gyroscope for detecting the Earth’s spin.

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Correspondence to Thibaut Sylvestre.

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Sylvestre, T. On-chip Earth spin detection. Nat. Photonics 14, 341–343 (2020). https://doi.org/10.1038/s41566-020-0626-9

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  • DOI: https://doi.org/10.1038/s41566-020-0626-9

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