典型文献
Long range dynamic displacement:precision PGC with sub-nanometer resolution in an LWSM interferometer
文献摘要：
We propose a precision phase-generated-carrier(PGC)demodulation method with sub-nanometer resolution that avoids nonlinear errors in a laser wavelength sinusoidal modulation fiber-optic interferometer for long range dynamic displacement sensing.Using orthogonal detection and an AC-DC component extraction scheme,the PGC carrier phase delay(CPD)and laser intensity modulation phase delay can be obtained simultaneously to eliminate the nonlinear error from accompanied optical intensity modulation and CPD.Further,to realize long range displacement sensing,PGC phase modulation depth(PMD),determined by the laser wavelength modulation amplitude and the working distance of the interferometer,is required to maintain an optimal value during measurement,including initial position and dynamic movement.By combining frequency sweeping in-terference and modified PGC-arctan demodulation to measure real-time working distance,adaptive PMD tech-nology is realized based on proportion control.We construct a fiber-optic Michelson and SIOS commercial interferometer for comparison and perform experiments to verify the feasibility of the proposed method.Experimental results demonstrate that an interferometer with sub-nanometer resolution and nanometer precision over a large range of 400 mm can be realized.
文献关键词：
中图分类号：
作者姓名：
YISI DONG;PENG-CHENG HU;HAIJIN FU;HONGXING YANG;RUITAO YANG;JIUBIN TAN
作者机构：
Center of Ultra-precision Optoelectronic Instrument,Harbin Institute of Technology,Harbin 150080,China;Key Laboratory of Ultra-precision Intelligent Instrumentation(Harbin Institute of Technology),Ministry of Industry and Information Technology,Harbin 150080,China
文献出处：
引用格式：
[1]YISI DONG;PENG-CHENG HU;HAIJIN FU;HONGXING YANG;RUITAO YANG;JIUBIN TAN-.Long range dynamic displacement:precision PGC with sub-nanometer resolution in an LWSM interferometer)[J].光子学研究（英文）,2022(01):59-67
A类：
LWSM,arctan,SIOS
B类：
Long,range,dynamic,displacement,precision,PGC,sub,nanometer,resolution,interferometer,We,phase,generated,carrier,demodulation,method,that,avoids,nonlinear,errors,laser,wavelength,sinusoidal,fiber,long,sensing,Using,orthogonal,detection,AC,DC,component,extraction,scheme,delay,CPD,intensity,can,obtained,simultaneously,eliminate,from,accompanied,optical,Further,depth,PMD,determined,by,amplitude,working,distance,required,maintain,optimal,value,during,measurement,including,initial,position,movement,By,combining,frequency,sweeping,terference,modified,adaptive,tech,nology,realized,proportion,control,construct,Michelson,commercial,comparison,perform,experiments,verify,feasibility,proposed,Experimental,results,demonstrate,over,large
AB值：
0.490685
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