Miniaturizing optical gyroscopes

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Science  05 May 2017:
Vol. 356, Issue 6337, pp. 498-499
DOI: 10.1126/science.356.6337.498-g

Gyroscopes are used in many applications and can be found in devices such as position sensors, inertial navigation systems, and motion stabilizers. Science museum toys consisting of spinning wheels and gimbals illustrate the general principle of operation, but decades of research have focused on their miniaturization and developing alternative operating systems. Optical systems based on the interference of counter-propagating laser beams can be extremely sensitive and robust, but they tend to use bulky components. Liang et al. and Li et al. have developed optical microresonator–based gyroscopes that can fit onto an optical chip. With demonstrated performance better than that of existing microphotonic systems, such components offer the possibility of building more lightweight, robust, and sensitive gyroscopes.

Optica 4, 114, 346 (2017).

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