Oct. 28, 2018

Scientists have developed the world’s smallest optical gyroscope. The new gyroscope, described in Nature Photonics, is 500 times smaller than the current best device.


  • Optical gyroscope is a device that helps vehicles, drones and handheld electronic devices know their orientation in 3D space.

  • Originally, gyroscopes were sets of nested wheels, each spinning on a different axis.

  • However, today’s cellphones have microelectromechanical sensor, which measures changes in the forces acting on two identical masses that are oscillating and moving in opposite directions.

  • These MEMS gyroscopes are limited in their sensitivity, so optical gyroscopes have been developed to perform the same function but with no moving parts and a greater degree of accuracy using a phenomenon called the Sagnac effect.

Source : The Hindu