Nonlinear-Error-Free Optical Quantization Using Dense Spectral Slicing

Takahiro KODAMA
Akihiro MARUTA
Tsuyoshi KONISHI

IEICE TRANSACTIONS on Communications   Vol.E99-B    No.3    pp.647-653
Publication Date: 2016/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2015EBP3126
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission for Communications
arrayed waveguide devices,  nonlinear optical signal processing,  nonlinear optics fibers,  

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We numerically and experimentally demonstrate for the first time a novel all-optical quantization technique using dense spectral slicing with a specially designed arrayed waveguide grating for orthogonal frequency division multiplexed signals. By using a mode-locked laser diode with low jitter, the quantization technique can be achieved a high-speed and low-jitter operation. Both numerical and experimental results confirm the feasibility of 10 GSample/s, completely linear 3-bit step quantization for photonic analog to digital conversion. This optical quantization technique will be beneficial for ultra-high-speed optical communication using digital signal processing.