Damping Microvibration Measurement Using Laser Diode Self-Mixing Interference

IEEE Photonics Journal

Wencai Huang¹  Chenxi Chen¹  Lu Wang¹  Minliang Chen¹  Yongbing Zhang¹ 

[1] Department of Electronic Engineering, Xiamen University, Xiamen, China;

关键词: Self-mixing interference;    damping factor;    microvibration;   

DOI  :  10.1109/JPHOT.2014.2323314

来源: DOAJ

【 摘 要 】

Based on the study of laser diode self-mixing interference effects, a simple damping microvibration measuring method that can accurately obtain the damping factor is presented. The damping factor is solved by recording the period and counting the fringe number of the self-mixing signal. The damping factor of 0.0483 s^-1 with a standard deviation of 0.0013 and the coefficient of variation of 2.69% was experimentally achieved. Theoretical simulation of the feedback strength on the measuring accuracy shows that the measuring method of the damping factor has high accuracy in the case of weak feedback.

【 授权许可】

Unknown