Open Access40GS/s Optical analog-to-digital conversion system and its improvement
Author(s) -
Qingwen Wu,
Hongming Zhang,
Yue Peng,
Xin Fu,
Minyu Yao
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.009252
Subject(s) - bandwidth (computing) , computer science , optics , sampling (signal processing) , electronic engineering , analog signal , digital signal processing , telecommunications , physics , computer hardware , engineering , detector
An optical analog-to-digital conversion system is proposed and demonstrated. Using time- and wavelength- interleaved optical sampling pulse train; sampling rate of 40GS/s is realized. 2.5 GHz sinusoidal electrical analog signal is sampled and quantized using this system, achieving an effective number of bits of 3.45 bits. A novel technology that can dramatically improve the bandwidth of this system will also be presented in this paper, which manifests that our system can realized high bandwidth of more than 50 GHz using commercially available LiNbO(3) phase modulator.