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Proceedings Paper

High-speed optical hold module in optical assisted ADC
Author(s): Xin Fu; Hongming Zhang; Minyu Yao
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Paper Abstract

High-speed Photonic Analog-to-Digital Convertor (ADC) has attracted intense interest of researchers for the past three decades, for it has the potential applications in areas that have extreme bandwidth requirements, such as radio astronomy, real-time measurements and so on. Photonic ADCs can be categorized into two major classes: optical assisted ADC and all-optical ADC. In optical assisted ADC, the sampling is performed in optical domain and the quantization is done in electrical domain. In all-optical ADC, the sampling, quantization and coding are done in optical domain. Optical assisted ADC combines the ultra-stable, ultra-low time jitter characterizations of mode-locked lasers and mature high-speed electronic circuits, therefore it is much easier to implement in practical systems. However, the ultra-short (less than tens of pico-seconds) post-sampling pulse sequence required by high resolution ADC places a challenge for the following electrical processing, because ultra-high-speed (>2GHz) "integrate-hold" circuits are hard to design and manufacture. In this paper, an optical hold module (OHM) is proposed, theoretically analyzed, numerically simulated and experimentally demonstrated, which can be used to replace ultra-high-speed "integrate-hold" circuits and has more merits than the latter. This optical hold module has potential applications in several other areas, such as fiber sensors, and so on.

Paper Details

Date Published: 11 November 2008
PDF: 8 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71342J (11 November 2008); doi: 10.1117/12.803524
Show Author Affiliations
Xin Fu, Tsinghua Univ. (China)
Hongming Zhang, Tsinghua Univ. (China)
Minyu Yao, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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