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Integration of the all-optical analog-to-digital (A/D) converter using self-frequency shifting in fiber and a pulse-shaping technique is described. Optical A/D conversion has attracted much attention, in order to realize high-speed and high-throughput system for photonic networks. A/D conversion generally consists of sampling, quantization and coding. Whereas various optical sampling techniques have been proposed, there are few investigations of the optical quantization and optical coding. Previously, we have proposed an all-optical A/D converter. In this paper, we aim at the integration of the proposed all-optical A/D converter using high nonlinear fiber, arrayed waveguide grating, and variable optical attenuator, and demonstrate its operation.

The Integration of the All-Optical Analog-to-Digital Converter by Use of Self-Frequency Shifting in Fiber and a Pulse-Shaping Technique