Share Email Print
cover

Proceedings Paper

Photonic time-stretch analog-to-digital converter employing phase-modulation and envelope removing
Author(s): Xinggang Xie; Xiaoli Yin; Jingjing Han; Li Li; Xiangjun Xin; Chongxiu Yu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Time-stretch technique has been researched for a long time and many implementations with different performance have been proposed. In this paper, we utilize phase modulation and optical coherent detection (PM-CD) to implement photonic time-stretch analog-to-digital converter. In this implementation scheme, only one optical source is used to ensure the coherence of the modulated signal and the reference signal. Besides, envelope removing technique is also employed to remove the Gaussian envelope contained in the stretched radio frequency (RF) signal. As a proof of its feasibility, this paper presents a brief analysis of the time-stretch technique and the implementation of the PM-CD system we proposed. A comprehensive mathematical model for the PM-CD combining with envelope removing technique is developed and a numerical simulation is also presented. Simulation results show this technique can not only slow down the high frequency RF signal but also recover the stretched RF signal with little distortion. The most important point is the phase error in PM-CD, the nonlinearity of the photodetector (PD) and the pulse-to-pulse variations can be eliminated at the same time. This technique is an improvement compared to the previously proposed PM-CD time-stretch analog-to-digital converter.

Paper Details

Date Published: 23 December 2013
PDF: 8 pages
Proc. SPIE 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 90431B (23 December 2013); doi: 10.1117/12.2038314
Show Author Affiliations
Xinggang Xie, Beijing Univ. of Posts and Telecommunications (China)
Xiaoli Yin, Beijing Univ. of Posts and Telecommunications (China)
Jingjing Han, Beijing Univ. of Posts and Telecommunications (China)
Li Li, Beijing Univ. of Posts and Telecommunications (China)
Xiangjun Xin, Beijing Univ. of Posts and Telecommunications (China)
Chongxiu Yu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 9043:
2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing
Yi Dong; Xiaoyi Bao; Chao Lu; Xiangjun Xin; Xuping Zhang, Editor(s)

© SPIE. Terms of Use
Back to Top