• Title : Optical quantizing and coding for ultrafast A/D conversion using nonlinear fiber-optic switches based on Sagnac interferometer
• Authors : Kensuke Ikeda, Jalil Mohammad Abdul, Shu Namiki, and Ken-ichi Kitayama
• Journal : Optics Express, vol.13, No.11, pp.4296-4302, May 2005.
• Abstract : We propose a novel optical quantizing and coding for ultrafast analog-to-digital (A/D) conversion using nonlinear optical swicthes based on Sagnac interferometer. The feasibility of a 3-bit A/D conversion at 10-Giga-sample-per-second (Gsps) is experimentally demonstrated. Multi-period transfer function of the Sagnac interferometer type nonlinear fiber-optic switch, which is a key to the quantizing and coding, is experimentally realized for the first time to the author's knowledge. The proposed optical quantizing and coding, combined with existing optical sampling techniques, will enable ultrafast photonic A/D conversion without high-speed electronics, potentially in the frequency region of well over a few hundreds Gsps.

[Back to the List of Publications]