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Proceedings Paper

The technique of acquiring weak signals in an NIR spectrometer
Author(s): Weihong Bi; Yujun Tang; Xiaoli Yang
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Paper Abstract

In this NIR Spectrometer the capability of sending light optical fiber is limited. The intensity of light from the sending light through optical fiber is very weak. Some good methods to solve this problem are introduced, which makes the signal stronger and easier to process. The important method is Lock-in Amplifier(LIA)bases on Correlation Detection.The ratio of signal to noise (S/N) is greatly improved through the phase sensitivity detection. The method of acquiring the weak signal, which can solve the problem of getting signal in NIR spectrometer, are introduced.

Paper Details

Date Published: 10 January 2005
PDF: 8 pages
Proc. SPIE 5640, Infrared Components and Their Applications, (10 January 2005); doi: 10.1117/12.576858
Show Author Affiliations
Weihong Bi, Yanshan Univ. (China)
Yujun Tang, Yanshan Univ. (China)
Xiaoli Yang, Yanshan Univ. (China)


Published in SPIE Proceedings Vol. 5640:
Infrared Components and Their Applications
Haimei Gong; Yi Cai; Jean-Pierre Chatard, Editor(s)

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