An adaptive thresholding scheme in photonic analog-to-digital conversion is proposed and experimentally demonstrated. Instead of a single-ended electronic comparator, differential detection technology is used to reduce the quantization noise induced by thresholding error. The main advantages of this scheme are the elimination of the dynamic setting of thresholding level and better tolerance to common-mode noise.
© 2009 Optical Society of America
Original Manuscript: March 23, 2009
Revised Manuscript: May 17, 2009
Manuscript Accepted: May 29, 2009
Published: July 13, 2009
Yue Peng, Hongming Zhang, Qingwei Wu, Xin Fu, and Minyu Yao, "Adaptive thresholding scheme in photonic analog-to-digital conversion," Opt. Lett. 34, 2201-2203 (2009)