Optical heterodyne micro-vibration measurement based on all-fiber acousto-optic frequency shifter

被引：32
作者：
Zhang, Wending [1 ,2 ]
Gao, Wei [1 ,2 ]
Huang, Ligang [3 ,4 ]
Mao, Dong [1 ,2 ]
Jiang, Biqiang [1 ,2 ]
Gao, Feng [3 ,4 ]
Yang, Dexing [1 ,2 ]
Zhang, Guoquan [3 ,4 ]
Xu, Jingjun [3 ,4 ]
Zhao, Jianlin [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, Sch Sci, Key Lab Space Appl Phys & Chem, Minist Educ, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Sch Sci, Shaanxi Key Lab Opt Informat Technol, Xian 710072, Peoples R China
[3] Nankai Univ, TEDA Appl Phys Inst, MOE Key Lab Weak Light Nonlinear Photon, Tianjin 300457, Peoples R China
[4] Nankai Univ, Sch Phys, Tianjin 300457, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 13期
关键词：
LASER; MODULATION;
D O I：
10.1364/OE.23.017576
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An all-fiber optical heterodyne detection configuration was proposed based on an all-fiber acousto-optic structure, which acted as both frequency shifter and coupler at the same time. The vibration waveform within a frequency range between 1 Hz to 200 kHz of a piezoelectric mirror was measured using this optical heterodyne detection system. The minimal measurable vibration amplitude and resolution are around 6 pm and 1 pm in the region of tens to hundreds of kilohertz, respectively. The configuration has advantages of compact size, high accuracy and non-contact measurement. Moreover, it is of a dynamically adjustable signal-to-noise ratio to adapt different surface with different reflections in the measurement, which will improve the usage efficiency of the light power. (C) 2015 Optical Society of America
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收藏
页码：17576 / 17583
页数：8
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