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北京交通大学 理学院 光电信息科学与工程专业实验室,北京 100044
[ "王韵致(1990-),女,安徽芜湖人,博士研究生。2013年于北京交通大学获得本科学位。主要从事光电检测、光纤传感方面的研究。E-mail:13118420@bjtu.edu.cn" ]
收稿日期:2019-05-26,
录用日期:2019-6-17,
纸质出版日期:2019-09-15
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王韵致, 陈龙辉, 李明佳, 等. 用于高精度测量位移等参量的光纤多波长激光器[J]. 光学 精密工程, 2019,27(9):2036-2042.
Yun-zhi WANG, Long-hui CHEN, Ming-jia LI, et al. Research on optical fiber multi-wavelength laser for measuring displacement precisely[J]. Optics and precision engineering, 2019, 27(9): 2036-2042.
王韵致, 陈龙辉, 李明佳, 等. 用于高精度测量位移等参量的光纤多波长激光器[J]. 光学 精密工程, 2019,27(9):2036-2042. DOI: 10.3788/OPE.20192709.2036.
Yun-zhi WANG, Long-hui CHEN, Ming-jia LI, et al. Research on optical fiber multi-wavelength laser for measuring displacement precisely[J]. Optics and precision engineering, 2019, 27(9): 2036-2042. DOI: 10.3788/OPE.20192709.2036.
本文研究并实验了光纤单波长激光器、光纤双波长激光器、以及光纤三波长激光器,分别发出单波长、双波长、以及三波长激光,分别用于对位移、台阶高度、绝对距离等参量的高精度干涉测量。利用光纤光栅只反射布拉格波长的特性,将光纤光栅作为光纤激光谐振腔的反射镜和波长选择元件,可以使光纤激光器具有单个或者多个独立的但光程重叠的激光谐振腔,每个激光谐振腔有掺铒光纤作为增益介质。980 nm激光的泵浦下,光纤多波长激光器分别发出单波长、双波长、以及三波长激光,每个波长值可以根据需要确定,两个波长之间的间隔也可以根据需要确定。光纤多波长激光器发出的多波长之间无模式竞争,每个波长的功率和频率都稳定。每个波长的稳定度达10
-7
,能够满足对位移、台阶高度、绝对距离进行高精度干涉测量的要求。
Three types of optical fiber lasers that can emit one
two
or three wavelengths simultaneously were researched and experimented on. The three types of lasers could be applied to measure displacement
step height
and absolute distance
respectively. By employing the characteristic that a fiber Bragg grating could only reflect a Bragg wavelength
fiber Bragg gratings have been used as the reflective mirrors of the laser resonant cavities and wavelength selectors. As such
a single laser resonant cavity and multiple independent laser resonant cavities with overlapped laser optical paths were constructed with a length of erbium-doped optical fiber in each cavity. Pumped by a 980-nm laser
the optical fiber lasers could emit a single wavelength and multiple wavelengths simultaneously; the value of each wavelength could be determined as needed. Furthermore
the wavelength interval between two adjacent wavelengths could be determined as needed. There is no laser mode competition between the wavelengths
as each wavelength has a stable power and frequency. Wavelength stability can reach up to 10
-7
satisfying the precision requirements of measuring displacement
step height
and absolute distance through interferometric methods.
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倪畅, 张鸣, 朱煜.采用相位调制方法的光纤干涉仪[J].光学 精密工程, 2017, 25(4): 820-826.
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钟金钢, 梁智强, 李仕萍.激光自混合干涉角度测量参数优化及旋转方向判别[J].光学 精密工程, 2016, 24(5):1001-1008.
ZHONG J G, LIANG ZH Q, LI SH P. Parameter optimization and direction recognition in angle measurement by laser self-mixing interference[J]. Opt. Precision Eng ., 2016, 24(5):1001-1008. (in Chinese)
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ZHOU J, LIAO C, WANG Y, et al .. Simultaneous measurement of strain and temperature by employing fiber Mach-Zehnder interferometer[J]. Optics Express , 2014, 22(2): 1680.
WANG W, WU N, TIAN Y, et al .. Miniature all-silica optical fiber pressure sensor with an ultrathin uniform diaphragm[J]. Optics Express , 2010, 18(9): 9006-90014.
LUKIN O V, MAGUNOV A N. Temperature measurement of glass and quartz plates by laser interferometry[J]. Optics & Spectroscopy , 1993, 74:377-379.
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