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

被引：31

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

引用

页码：17576 / 17583

页数：8

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