Patent ID: 11933610
Assignee: NEC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method of generating a depth profile vector using a swept-source optical coherence tomography (SS-OCT) apparatus, the method comprising:
outputting a plurality of optical signals using a plurality of wavelength-tunable light sources;
splitting the plurality of optical signals from the plurality of wavelength-tunable light sources into a reference optical path and a sample optical path;
illuminating a sample using the sample optical path;
interfering return optical signals from each of the reference optical path and the sample optical path to generate an optical interference signal;
detecting the optical interference signal;
generating an electrical signal based on the detected optical interference signal;
generating an interference signal vector based on the generated electrical signal; and
generating, using a controller, the depth profile vector based on the interference signal vector using compressed sensing,
wherein center wavelengths of the plurality of wavelength-tunable light sources are chosen such that mutual coherence of a transform matrix that transforms the depth profile vector to the interference signal vector is minimized.