CPC G01B 9/02051 (2013.01) [G01B 9/02003 (2013.01); G01B 9/0207 (2013.01); G01B 9/02008 (2013.01); G01B 9/02027 (2013.01); G01B 9/02028 (2013.01); G01B 9/02049 (2013.01); G01B 11/14 (2013.01); G01D 5/35303 (2013.01); G02B 6/125 (2013.01)] | 17 Claims |
1. A digital measuring device, the digital measuring device comprising:
a first ring resonator configured to produce a first frequency comb of light and direct at least a portion of the first frequency comb of light at an object;
at least one waveguide structure configured to combine a reference beam with light reflected from the object to produce a measurement beam;
a first multiplexer configured to split the measurement beam into a plurality of channels spaced in frequency;
a controller configured to measure a distance between the digital measuring device and the object based on the plurality of channels; and
wherein the controller is further configured to determine the distance between the digital measuring device and the object by using an error metric to correlate the intensity values of the plurality of channels with sinusoidal intensity values.
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