基于光梳多波长干涉实时绝对测距的同步相位解调
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摘要
光梳的出现带来了大尺寸高精度绝对测距(ADM)技术的革新,其卓越的光频特性推动了基于多波长干涉的实时ADM的发展。为在基于光梳多波长干涉的实时ADM中实现干涉信号的同步相位解调,提出了基于多波长外差干涉的多路同步相位解调信号处理方法,研制了相应的同步相位解调模块。实验中通过对波长进行解复用,测试了多路相位计的线性精度、稳定度和同步性等性能,对多波长干涉信号的实时同步相位解调进行了实验分析,验证了该方法实现高精度同步相位解调的可行性。
The advent of optical comb has brought technical innovation for large-scale and high-precision absolute distance measurement(ADM).The marvelous features of optical frequency facilitate the great development to the real time ADM based on multi-wavelength interferometry. To realize synchronous phase demodulation for interference signals in real-time ADM based on optical comb multi-wavelength interferometry,we propose a multichannel synchronous phase demodulation signal-processing method based on multi-wavelength heterodyne interferometry,and develope a related phase demodulation module.The wavelength de-multiplexing is conducted in the experiment. Performances of the multi-channel phasemeter, such as linear precision, stability and synchronization,are tested.The experimental analysis about the real-time synchronous phase demodulation for multi-wavelength interference signal is carried out,and the feasibility of realizing high-precision synchronous phase demodulation with the proposed method is verified.
The advent of optical comb has brought technical innovation for large-scale and high-precision absolute distance measurement(ADM).The marvelous features of optical frequency facilitate the great development to the real time ADM based on multi-wavelength interferometry. To realize synchronous phase demodulation for interference signals in real-time ADM based on optical comb multi-wavelength interferometry,we propose a multichannel synchronous phase demodulation signal-processing method based on multi-wavelength heterodyne interferometry,and develope a related phase demodulation module.The wavelength de-multiplexing is conducted in the experiment. Performances of the multi-channel phasemeter, such as linear precision, stability and synchronization,are tested.The experimental analysis about the real-time synchronous phase demodulation for multi-wavelength interference signal is carried out,and the feasibility of realizing high-precision synchronous phase demodulation with the proposed method is verified.
引文
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[15]Wang Guochao,Yan Shuhua,Yang Jun,et al.Analysis of an innovative method for large-scale high-precision absolute distance measurement based on multi-heterodyne interference of dual optical frequency combs[J].Acta Physica Sinica,2013,62(7):070601.王国超,颜树华,杨俊,等.一种双光梳多外差大尺寸高精度绝对测距新方法的理论分析[J].物理学报,2013,62(7):070601.
[16]Chun B J,Hyun S,Kim S,et al.Frequency-comb-referenced multi-channel fiber laser for DWDM communication[J].Optics Express,2013,21(24):29179-29185.
[17]Wang G C,Jang Y S,Hyun S,et al.Absolute positioning by multi-wavelength interferometry referenced to the frequency comb of a femtosecond laser[J].Optics Express,2015,23(7):9121-9129.
[18]Tilford C R.Analytical procedure for determining length from fractional fringes[J].Applied Optics,1977,16(7):1857-1860.
[19]Wang Guochao,Wei Chunhua,Yan Shuhua.Wavelength selection and non-ambiguity range analysis for optical-combreferenced multi-wavelength absolute distance measurement[J].Acta Optica Sinica,2014,34(4):0412002.王国超,魏春华,颜树华.光梳多波长绝对测距的波长选择及非模糊度量程分析[J].光学学报,2014,34(4):0412002.
[20]Zhang E,Chen B,Yan L,et al.Laser heterodyne interferometric signal processing method based on rising edge locking with high frequency clock signal[J].Optics Express,2013,21(4):4638-4652.
[2]Bourdet G L,Orszag A G.Absolute distance measurements by CO2laser multiwavelength interferometry[J].Applied Optics,1979,18(2):225-227.
[3]Walsh C J.Measurements of absolute distances to 25 m by multiwavelength CO2laser interferometry[J].Applied Optics,1987,26(9):1680-1687.
[4]Liang Jing,Long Xingwu,Zhang Bin,et al.Absolute distance measurement by using 117μm synthetic wavelength[J].Acta Optica Sinica,2010,30(10):2947-2951.梁晶,龙兴武,张斌,等.用117μm合成波长实现绝对距离干涉测量[J].光学学报,2010,30(10):2947-2951.
[5]Bobroff N.Recent advances in displacement measuring interferometry[J].Measurement Science and Technology,1993,4(9):907-926.
[6]Manske E,Jger G,Hausotte T,et al.Recent developments and challenges of nanopositioning and nanomeasuring technology[J].Measurement Science and Technology,2012,23(7):074001.
[7]Kim S W.Metrology:combs rule[J].Nature photonics,2009,3(6):313-314.
[8]Minoshima K,Matsumoto H.High-accuracy measurement of 240-m distance in an optical tunnel by use of a compact femtosecond laser[J].Applied Optics,2000,39(30):5512-5517.
[9]Ye J.Absolute measurement of a long,arbitrary distance to less than an optical fringe[J].Optics Letters,2004,29(10):1153-1155.
[10]Jin J,Kim Y J,Kim Y,et al.Absolute length calibration of gauge blocks using optical comb of a femtosecond pulse laser[J].Optics Express,2006,14(13):5968-5974.
[11]Schuhler N,SalvadéY,Lévêque S,et al.Frequency-comb-referenced two-wavelength source for absolute distance measurement[J].Optics Letters,2006,31(21):3101-3103.
[12]Joo K N,Kim S W.Absolute distance measurement by dispersive interferometry using a femtosecond pulse laser[J].Optics Express,2006,14(13):5954-5960.
[13]Lee J,Kim Y J,Lee K,et al.Time-of-flight measurement with femtosecond light pulses[J].Nature Photonics,2010,4(10):716-720.
[14]Coddington I,Swann W C,Nenadovic L,et al.Rapid and precise absolute distance measurements at long range[J].Nature Photonics,2009,3(6):351-356.
[15]Wang Guochao,Yan Shuhua,Yang Jun,et al.Analysis of an innovative method for large-scale high-precision absolute distance measurement based on multi-heterodyne interference of dual optical frequency combs[J].Acta Physica Sinica,2013,62(7):070601.王国超,颜树华,杨俊,等.一种双光梳多外差大尺寸高精度绝对测距新方法的理论分析[J].物理学报,2013,62(7):070601.
[16]Chun B J,Hyun S,Kim S,et al.Frequency-comb-referenced multi-channel fiber laser for DWDM communication[J].Optics Express,2013,21(24):29179-29185.
[17]Wang G C,Jang Y S,Hyun S,et al.Absolute positioning by multi-wavelength interferometry referenced to the frequency comb of a femtosecond laser[J].Optics Express,2015,23(7):9121-9129.
[18]Tilford C R.Analytical procedure for determining length from fractional fringes[J].Applied Optics,1977,16(7):1857-1860.
[19]Wang Guochao,Wei Chunhua,Yan Shuhua.Wavelength selection and non-ambiguity range analysis for optical-combreferenced multi-wavelength absolute distance measurement[J].Acta Optica Sinica,2014,34(4):0412002.王国超,魏春华,颜树华.光梳多波长绝对测距的波长选择及非模糊度量程分析[J].光学学报,2014,34(4):0412002.
[20]Zhang E,Chen B,Yan L,et al.Laser heterodyne interferometric signal processing method based on rising edge locking with high frequency clock signal[J].Optics Express,2013,21(4):4638-4652.