US 12,345,596 B2
Method and system for extracting information from an optical signal
Shmuel Sternklar, Yakir (IL)
Assigned to Ariel Scientific Innovations Ltd., Ariel (IL)
Appl. No. 17/787,379
Filed by Ariel Scientific Innovations Ltd., Ariel (IL)
PCT Filed Dec. 20, 2020, PCT No. PCT/IL2020/051311
§ 371(c)(1), (2) Date Jun. 20, 2022,
PCT Pub. No. WO2021/124340, PCT Pub. Date Jun. 24, 2021.
Claims priority of provisional application 62/950,976, filed on Dec. 20, 2019.
Prior Publication US 2022/0381644 A1, Dec. 1, 2022
Int. Cl. G01M 11/00 (2006.01)
CPC G01M 11/3172 (2013.01) [G01M 11/3145 (2013.01); G01M 11/333 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A system for providing information based on a spectral content of an optical signal, comprising:
an optical modulator for applying a time-dependent modulation to the optical signal according to at least one sub-optical modulation frequency, to provide a modulated optical signal;
an optoelectronic device configured for receiving said modulated optical signal and responsively producing, at a wavelength dependent photosensitive region within said optoelectronic device, pairs of charge carriers effecting a net electrical current within said optoelectronic device thereby generating an electrical sensing signal, wherein transit times of said charge carriers within said optoelectronic device are also wavelength dependent and wherein electrical signals generated by charge carriers in response to different spectral components of the optical signal exhibit different modulation parameters; and
a signal processing system configured for processing said electrical sensing signal and to generate output correlative to at least one wavelength of the optical signal based on said modulation parameters.