A low-power photonic quantization approach using OFDM subcarrier spectral shifts.
Photonic analog-to-digital conversion and optical quantization are demonstrated, based on the spectral shifts of orthogonal frequency division multiplexing subcarriers and a frequency-packed arrayed waveguide grating. The system is extremely low-energy consuming since the spectral shifts are small and generated by cross-phase modulation, using a linear-slope high-speed and low-jitter pulse train generated by a mode locked laser diode. The feasibility of a 2, 3 and 4-bit optical quantization scheme is demonstrated.
Takahiro
T
Kodama
Koji
K
Morita
Gabriella
G
Cincotti
Ken-Ichi
K
Kitayama
D000703:Analog-Digital Conversion; D003198:Computer Simulation; D017711:Nonlinear Dynamics; D009716:Numerical Analysis, Computer-Assisted; D055100:Optical Fibers; D017785:Photons; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis