Patent ID: 9115994
Filing Date: 2015-08-25
Classification: G01C,H04B

Abstract:
1. A system comprising: an optical resonator configured to allow light to resonate therein; at least one light source, wherein the light from the at least one light source is controlled to form a plurality of optical fields, wherein each field in the plurality of fields is phase or frequency modulated at a common modulation frequency and each field in the plurality of fields is at a different frequency; a plurality of heterodyne modulators, wherein each heterodyne modulator in the plurality of heterodyne modulators phase or frequency modulates a respective field in the plurality of fields at a respective heterodyne frequency to form a plurality of sidebands, wherein the corresponding heterodyne frequency is different for each heterodyne modulator in the plurality of heterodyne modulators; at least one coupler configured to couple the plurality of sidebands into the optical resonator; and a feedback control coupled to the resonator, wherein the feedback control is configured to detect the plurality of sidebands transmitted out of the resonator to create a plurality of detected sideband signals and adjust frequencies of the plurality of fields based on the plurality of detected sideband signals.