Measurement of the velocity inside an all-fiber DBR laser by self-mixing technique

被引：0
作者：
Zhengting Du
Liang Lu
Wenhua Zhang
Bo Yang
Huaqiao Gui
Benli Yu
机构：
[1] Anhui University,Key Laboratory of Opto
[2] Chinese Academy of Sciences,Electronic Information Acquisition and Manipulation of Ministry of Education
来源：
Applied Physics B | 2013年 / 113卷
关键词：
Fiber Laser; Relaxation Oscillator; Distribute Bragg Reflector; Doppler Shift Frequency; Laser Doppler Velocimeter;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The self-mixing interference for optical velocity sensing is experimentally investigated in an all-fiber configuration distributed Bragg reflector laser. Simultaneously, theory model of self-mixing interference laser Doppler velocimeter based on quasi-analytical method. The experimental results show Doppler shift frequency is linearly proportional to the value of the velocity which agrees well with theory analysis. The results preserve an enough signal-to-noise ratio around 40 dB in the range from 39.3–317.0 mm/s (measurement range depending on bandwidth of circuit) for velocity measurement. Additionally, the cutoff circuit is used in our system to get a stable Doppler signal and reduces the error rate to 0.136 % in practical measurement.
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页码：153 / 158
页数：5
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