Abstract

We describe an optically assisted folding-flash analog-to-digital converter. The periodic transfer function of the Mach–Zehnder interferometer is used to perform analog folding on the electronic signal to be quantized. A novel analog encoding scheme for efficient generation of gray code digital data is proposed. The new encoding scheme eliminates the requirement for interferometers with ultralow V_π, which, so far, has hindered the development of such systems. The encoding concept is experimentally demonstrated through the use of LiNbO₃ modulators.

© 1995 Optical Society of America

Photonic serial implementation of a flash analog-to-digital converter

Hongxia He, Shuna Yang, Hao Chi, and Tao Jin
Opt. Lett. 45(7) 1643-1646 (2020)

Photonic quantization and encoding scheme with improved bit resolution based on waveform folding

Shuna Yang, Hongxia He, Hao Chi, and Ran Zeng
Opt. Express 27(24) 35565-35573 (2019)

Optical neural-net analog-to-digital converter

Ju-Seog Jang, Sang-Yung Shin, and Soo-Young Lee
Opt. Lett. 14(3) 159-161 (1989)

Photonic analog-to-digital converters

George C. Valley
Opt. Express 15(5) 1955-1982 (2007)

Photonic analog-to-digital converter using Mach-Zehnder modulators having identical half-wave voltages with improved bit resolution

Shuna Yang, Chao Wang, Hao Chi, Xianmin Zhang, Shilie Zheng, Xiaofeng Jin, and Jianping Yao
Appl. Opt. 48(22) 4458-4467 (2009)