US 12,335,649 B1
Methods and systems for signal sampling using spatial dispersion and photonics assistance
Esko Olavi Mikkola, Mesa, AZ (US); and Esen Salcin, Mesa, AZ (US)
Assigned to ALPHACORE, INC., Tempe, AZ (US)
Filed by Alphacore, Inc., Tempe, AZ (US)
Filed on Oct. 25, 2023, as Appl. No. 18/383,852.
Claims priority of provisional application 63/419,308, filed on Oct. 25, 2022.
Int. Cl. H04N 25/772 (2023.01); H03M 1/12 (2006.01); H04N 25/779 (2023.01); H04N 25/78 (2023.01)
CPC H04N 25/772 (2023.01) [H03M 1/1255 (2013.01); H04N 25/779 (2023.01); H04N 25/78 (2023.01)] 8 Claims
OG exemplary drawing
 
4. A method comprising:
outputting a wavelength dispersed optical pulse that is modulated according to an input signal;
spatially dispersing the wavelength dispersed optical pulse by wavelength to produce a spatially dispersed optical pulse;
transforming the spatially dispersed optical pulse according to a Fast Fourier Transform (FFT) operation into a frequency domain transformed optical pulse; and
converting the frequency domain transformed optical pulse to electrical signals at a sensor system, the sensor system including a two-dimensional (2D) array of photodetectors; and
determining frequency information about the input signal from the electrical signals.