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Proceedings Paper

Design and realization of a weak signal acquisition system for optical spectrum analysis
Author(s): Ming Yu; Hui Lin; Xin Wei
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Paper Abstract

A weak signal processing system for spectrum analyzing using low-noise isolation and amplification and low-pass Filter (LPF) methods is developed. In order to extract the spectrum signals from the external disturbance as well as regenerate the detected results dynamically, a method of synchronized isolation and amplification is used to amplify the weak signals exponentially as well as to isolate the noise of random frequency by electromagnetic induction technology, and a LPF is designed to keep the output signals stable. What’s more, an interface based on MFC single document view is programmed to display and save the scanned spectrum diagram. As a result, more than 1.5 million times of amplification, less than 9nAof current drift and a cut-off frequency of 10Hzisequipped for the system.

Paper Details

Date Published: 6 July 2015
PDF: 7 pages
Proc. SPIE 9631, Seventh International Conference on Digital Image Processing (ICDIP 2015), 963122 (6 July 2015); doi: 10.1117/12.2197012
Show Author Affiliations
Ming Yu, Shenzhen Institute of Advanced Technology (China)
Shenzhen Key Lab. of Precision Engineering (China)
Guangdong Univ. of Technology (China)
Hui Lin, Shenzhen Institute of Advanced Technology (China)
Shenzhen Key Lab. of Precision Engineering (China)
The Chinese Univ. of Hong Kong (Hong Kong China)
Xin Wei, Shenzhen Key Lab. of Precision Engineering (China)


Published in SPIE Proceedings Vol. 9631:
Seventh International Conference on Digital Image Processing (ICDIP 2015)
Charles M. Falco; Xudong Jiang, Editor(s)

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