Open AccessA low-power photonic quantization approach using OFDM subcarrier spectral shifts
Author(s) -
Takahiro Kodama,
Koji Morita,
Gabriella Cincotti,
Kenichi Kitayama
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.028719
Subject(s) - optics , photonics , arrayed waveguide grating , physics , quantization (signal processing) , orthogonal frequency division multiplexing , jitter , multiplexing , phase modulation , subcarrier , optical power , laser linewidth , laser , phase noise , wavelength division multiplexing , computer science , telecommunications , wavelength , channel (broadcasting) , computer vision
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.