Home > Papers

 
 
The frequency mixing impact analysis of the light intensity noise with modulation signals in phase generated carrier (PGC) demodulation method
Zhen Shenglai 1 * #,Yu Jiaolong 2
1.Anhui University, School of physics and material science, HeFei 230039
2.Anhui University,School of physics and material science
*Correspondence author
#Submitted by
Subject:
Funding: none
Opened online:12 November 2012
Accepted by: none
Citation: Zhen Shenglai,Yu Jiaolong.The frequency mixing impact analysis of the light intensity noise with modulation signals in phase generated carrier (PGC) demodulation method[OL]. [12 November 2012] http://en.paper.edu.cn/en_releasepaper/content/4492945
 
 
In order to improve the resolution of laser Doppler interferometer, the noise of the system need to be suppressed. Through the analysis of the influence of laser relaxation oscillation mixing with signals in phase generated carrier (PGC) demodulation, we can get a conclusion that the low-frequency part of the laser intensity noise have a greater impact on the signal to noise ratio of PGC demodulation. By using Optoelectronic negative feedback method, we can achieve effective suppression of the low-frequency laser intensity noise and laser relaxation oscillation peak, which reduce the influence of the mixing of the light source intensity noise, and the system signal to noise ratio (SNR) is improved.
Keywords:Laser Doppler; PGC demodulation; relaxation oscillation; optoelectronic negative feedback
 
 
 

For this paper
  • ● PDF (0B)
  • ● Revision 0 　　
  • ● Print this paper
  • ● Recommend this paper to a friend
  • ● Add to my favorite list

    Saved Papers

    Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags
Add yours

Related Papers
  • Other similar papers

Statistics
PDF Downloaded 223
Bookmarked 0
Recommend 5
Comments Array
Submit your papers