Patent ID: 9069004
Filing Date: 2015-06-30
Classification: G01B,G01P

Abstract:
1. A device for optomechanical sensing of motion, comprising: a substrate on which a first optical cavity is fixed; a second optical cavity separated from the first optical cavity by a distance that provides optical coupling between first and second optical cavities to produce an optical resonance that varies with a spacing between the first and second optical cavities; a suspension coupled between the first and second optical cavities to allow the second optical cavity to move or deform with respect to the first optical cavity under action of a force to change the spacing between the first and second optical cavities; an optical coupler that couples light into and out of the first and second optical cavities; and a detection unit that is coupled to receive and detect light coming out of the optical coupler and extracts from the detected light a change in the optical resonance with respect to the spacing between the first and second optical cavities to measure motion based on the detected change.