The technique of acquiring weak signals in an NIR spectrometer

Weihong Bi; Yujun Tang; Xiaoli Yang

doi:10.1117/12.576858

10 January 2005 The technique of acquiring weak signals in an NIR spectrometer

Weihong Bi, Yujun Tang, Xiaoli Yang

Proceedings Volume 5640, Infrared Components and Their Applications; (2005) https://doi.org/10.1117/12.576858
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Weihong Bi, Yujun Tang, and Xiaoli Yang "The technique of acquiring weak signals in an NIR spectrometer", Proc. SPIE 5640, Infrared Components and Their Applications, (10 January 2005); https://doi.org/10.1117/12.576858

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