Amazing stuff! Will this also be built into your next smartphone?
"This year, two companies—Santa Clara, California-based Anello Photonics and Montreal-based One Silicon Chip Photonics (OSCP)—have introduced new gyroscope-on-a-chip navigation systems, allowing for precise heading and distance tracking without satellite signals.
Such inertial navigation is increasingly important today, because GPS is susceptible to jamming and spoofing, which can disrupt navigation or provide misleading location data. These problems have been well-documented in conflict zones, including Ukraine and the Middle East, where military operations have faced significant GPS interference. For drones, which rely on GPS for positioning, the loss of signal can be catastrophic, leaving them unable to navigate and sometimes resulting in crashes. ...
That was the state of things until Caltech electrical engineering and medical engineering professor Ali Hajimiri and his team made a breakthrough that overcame previous size and accuracy limitations. In a 2018 paper, they described how they created a solid-state gyroscope small enough to fit on a grain of rice. Like the optical gyroscopes that appeared before it, this gyroscope leveraged the Sagnac effect, a principle first demonstrated in 1913 by French physicist Georges Sagnac. ..."
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