Tiny vibration measurement based on all-fiber self-mixing interference
-
摘要: 为了解决自由空间自混合干涉测量系统工作距离短、易受环境干扰等不足,采用全光纤传光、光纤自聚焦透镜收集反馈光,设计了一套全光纤自混合干涉测量系统;建立了反射面为镜面时自聚焦透镜收集效率的理论模型,在理论上论证了全光纤自混合干涉测量系统的可行性;最后搭建了全光纤自混合干涉测量系统,并以铝膜作为反射面,进行了微振动实验研究.结果表明,该系统能获得较好的实验信号,可以解决自由空间自混合干涉测量系统工作距离短、易受环境干扰等问题.Abstract: In order to overcome disadvantages of a free-space self-mixing system,such as short working distance and susceptivity to the environment,an all-fiber self-mixing interference system was designed using a fiber to transmit light and a gradient refractive index(GRIN)lens to collect feedback light.The collection efficiency model of the GRIN lens with a mirror reflecting surface was built.Then the feasibility of an all-fiber self-mixing interference system was theoretically proved.Finally,the experimental facility was established.Experiments were carried out with aluminous foil as reflecting surface.The experimental results show that this new instrument can acquire fine signal and it also has the ability of remote measurement.
-
Keywords:
- laser technique /
- vibration measurement /
- self-mixing interference /
- all-fiber /
- GRIN lens
-
-
[1] KINGPGR.Metrology with an optical master[J].Review of Scientific Instruments,1963,17:180-182.
[2] ZHOU J P,WANG M,HAND F.Experiment observation of selfmixing interference in distributed feedback laser[J].Optics Express,2006,14(12):5301-5306.
[3] SCALISE L,PAONEN.Laser Doppler vibrometry based on self-mixing effect[J].Optics and Lasers in Engineering,2002,38(3/4):173-184.
[4] WANG M,LU M,HAO H,et al.Statistios of the self-mixing speckleinterference in a laser diode and its application to the measurement of flow velocity[J].Optics Communication,2006,260(1):242-247.
[5] HUXF.Effect of external cavity' s feedback light on state density of photon in internal cavity[J].Acta Optica Sinica,2010,30 (9):2684-2689 (in Chinese).
[6] SHINOHARA S, MOCHIZUKI A, YOSHIDA H,et al.Laser Doppler velocimeter using the self-mixing effect of a semiconductor laser diode[J].Applied Optics,1986,25(9):1417-1419.
[7] KOELINK M H,SLOT M,de MUL F F M,et al.Laser Doppler velocimeter based on the self-mixing effect in a fiber-coupled semiconductor laser:theory[J].Applied Optics,1992,31 (18):3401-3408.
[8] JENTINK H W,de MUL F F M,SUICHIES H E,et al.Small laser Doppler velocimeter based on the self-mixing effect in a diode laser[J].Applied Optics,1988,27(2):379-385.
[9] OZDEMIR S K,ITO S,SHINOHARA S,et al.Correlation-based speckle velocimeter with self-mixing interference in a semiconductor laser diode[J].Applied Optics,1999,38(33):6859-6865.
[10] LIU Sh G,LI Z R,LIU Q.Feasibility study of all-fiber self-mixing speckle interference[J].Laser Technology,2010,34(3):316-319(in Chinese).
[11] YU Y G,GUO Ch Y,YE H Y.Vibration measurement based on moderate optical feedback self-mixing interference[J].Acta optica Sinica,2007,27(8):1430-1434(in Chinese).
[12] HU X F.Reconstruction of vibration signal from laser diode self-mixing interference signal[J].Chinese Journal of Lasers,2009,36(6):1498-1502 (in Chinese).
[13] HU X F.Observation and analysis on self-mixing interference of muti-longitudinal mode laser diode[J].Acta Optica Sinica,2010,30(2):432-439(in Chinese).
[14] CHURNSIDE J H.Laser Doppler velocimetry by modulating a CO2 laser with backscattered light[J].Applied Optics,1984,23(1):61-66.
[15] ACKET G,LENSTRA D,BOET A D,et al.The influence of feedback intensity on longitudinal mode properties and optical noise in index-guide semiconductor lasers[J].IEEE Journal of Quantum Electronics,1984,20(10):1163-1169.
[16] HU X F.Calculation analysis and experimental observation on laser diode self-mixing interference[J].Acta Optica Sinica,2008,28(6):1111-1116(in Chinese).
[17] LIU Sh G,LI Z R,LIU Q.The study of self-mixing interference signal processing based on time-frequency analysis[J].Laser Technology,2009,33(6):626-629(in Chinese).
[18] HUANG W,L(U) L,GUI H Q,et al.Analysis on the laser self-mixing vibration signal transmitted through optical fiber[J].Opto-Electronic Engineering,2006,33(1):50-53(in Chinese).
[19] de GROOT P J.Range-dependent optical feedback effects on the multimode spectrum of laser diodes[J].Journal of Modem optics,1990,37(7):1199-1214.
计量
- 文章访问数: 6
- HTML全文浏览量: 0
- PDF下载量: 7
下载: