A team from UCSB and Caltech has published an account in Optics Letters of a chip-scale optical ring laser gyroscope capable of measuring rotations as slow as 37 degrees per hour, approaching Earth's rotation rate of 15 degrees per hour. The device is based on a low-noise Brillouin laser built on a silicon nitride waveguide photonic integrated circuit, can be fabricated with standard CMOS processes, and requires only milliwatt-level optical power. Its sensitivity is nearly 2,000 times better than the team's earlier device.
Why we recommend it: That is nearly a 2,000-fold improvement over the team's earlier silicon nitride Brillouin gyroscope, which measured 72,000 degrees per hour, and indicates how far on-chip optical gyroscopes still are from navigation-grade applications.
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Data from NE Times show that 525,500 LiDAR units were installed in passenger vehicles in China in August 2026. Hesai installed 182,436 units, just 65 fewer than Huawei, with the two companies together accounting for 69.4%. The growth logic is extending beyond simply adding vehicle models to multiple LiDARs per vehicle, robotic perception and 3D spatial mapping.
The Shanghai Institute of Optics and Fine Mechanics has proposed a configurational entropy engineering strategy that enables ultra-broadband emission in bismuth-doped glass fiber.