非对称3×3干涉型传感器解调系统设计
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摘要
针对3×3耦合器输出信号的非对称特性,研究并推导了改进型的3×3耦合器解调算法。根据该算法,使用Labview设计了信号处理软件。实现了对非对称3×3耦合器输出信号的软件解调和频谱分析。通过实验,系统的频率测量范围可达10～1000Hz,相位测量范围为-10～10rad,相位灵敏度为0.5V/rad。
Based on the asymmetry characteristic of 3×3 coupler output signal, the improved demodulation arithmetic of 3×3 coupler was studied and deduced. The signal processing software was designed by Labview, and it could achieve software demodulation of asymmetric 3×3 coupler output signal and spectrum analysis. Testing result shows that the frequency measured range is 10-1000Hz and the phase measured range is -10～10 rad. The phase sensitivity of the system is 0.5V/rad. This system has high precision, large measured range and convenience to observe waveform and spectrum.
Based on the asymmetry characteristic of 3×3 coupler output signal, the improved demodulation arithmetic of 3×3 coupler was studied and deduced. The signal processing software was designed by Labview, and it could achieve software demodulation of asymmetric 3×3 coupler output signal and spectrum analysis. Testing result shows that the frequency measured range is 10-1000Hz and the phase measured range is -10～10 rad. The phase sensitivity of the system is 0.5V/rad. This system has high precision, large measured range and convenience to observe waveform and spectrum.
引文
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[16]李东,张晓晖,黄俊斌.用基于3×3耦合器的干涉仪解调相移光纤光栅传感信号[J].传感技术学报,2004,17(3):460-462,452.LI Dong,ZHANG Xiao-hui,HUANG Jun-bin.Demodulation for Phase Shifted Grating Sensor By Interferometer Based On3×3Coupler[J].JOURNAL OF TRANSDUCTION TECHNOLOGY,2004,17(3):460-462,452.
[17]Zhiqiang Zhao,Suleyman Demokan M,Senior Member.Improved Demodulation Scheme for Fiber Optic Interferometers Using an Asymmetric3×3Coupler[J].Journal of Lightwave Technology,1997,15(11):2059-2068.
[18]江毅,娄英明,王惠文.基于对称3×3耦合器的光纤干涉信号的软件解调技术[J].光子学报,1998,27(2):152-155.JIANG Yi,LOU Ying-ming,WANG Hui-wen.Software Demodulation for3×3Coupler Based Fiber Optic Interferometer[J].ACTA PHOTOICA SINICA,1998,27(2):152-155.
[19]陈东明,刘伟平,张多英,等.基于Labview6.0的光纤布拉格光栅光学特性的仿真设计[J].光电工程,2002,29(S1):58-61.CHEN Dong-ming,LIU Wei-ping,ZHANG Duo-ying,et al.Simulation Design for Optical Property of Optic Fiber Bragg Grating Based on Labview6.0[J].Opto-electronic Engineering,2002,29(S1):58-61.
[20]King Damien,Lyons William B,Flanagan Colin,et al.An Optical-Fiber Sensor for Use in Water Systems Utilizing Digital Signal Processing Techniques and Artificial Neural Network Pattern Recognition[J].IEEE Sensors Journal,2004,4(1):21-27.
[21]彭保进,张敏,寥延彪,等.光纤传感器相位漂移及倍频问题的解决方法[J].光电子·激光,2005,16(8):913-917.PENG Bao-jin,ZHANG Min,LIAO Yan-biao,et al.The Method for Resolving Phase Shifting and Frequency Doubling of Fiber-Optic Sensors[J].Journal of Optoelectronics Laser,2005,16(8):913-917.
[2]王惠文,江先进,赵长明.光纤传感技术与应用[M].北京:北京国防工业出版社,2001.WANG Hui-wen,JIANG Xian-jin,ZHAO Chang-ming.Optical Fiber Sensor Technology And Application[M].Beijing:Beijing National Defence Industry Press,2001.
[3]裴雅鹏,杨军,苑立波.光纤干涉型传感器原理及其相位解调技术[J].光学与光电技术,2005,3(3):17-21.PEI Ya-peng,YANG Jun,YUAN Li-bo.Principle of Fiber Optic Interferometric Sensors and Their Phase Demodulation Techniques[J].Optics&Optoelectronic Technology,2005,3(3):17-21.
[4]柏林厚,寥延彪,张敏,等.干涉型光纤传感器相位生成载波解调方法改进与研究[J].光子学报,2005,34(9):1324-1327.BO Lin-hou,LIAO Yan-biao,ZHANG Min,et al.The Improvement on PGC Demodulation Method Based on Optical Fiber Interferometer Sensors[J].Acta Photonica Sinica,2005,34(9):1324-1327.
[5]Dandridge A,Tveten A B,Giallorenzi T G.Homodyne Demodulation Scheme for Fiber Optic Sensors Using Phase Generated Carrier[J].IEEE J.Quantum Electron,1982,18(10):1647-1653.
[6]唐继.Mach-Zehnder光纤干涉仪相位检测方案研究[J].传感技术学报,2000,13(2):96-100.TANG Ji.Research Of Phase Detected Scheme Based On Mach-Zehnder Optical Interferometer[J].Chinese Journal of SENSOES AND ACTUATORS,2000,13(2):96-100.
[7]COLE J H,Danver B A,Bucaro J A.Synthetic-Heterodyne Interferometric Demodulation[J].IEEE Transactions on Microwave Theory and Techniques,1982,30(4):540-543.
[8]Connelly M J.Digital Synthetic-heterodyne Interferometric Demodulation[J].Journal of Optics A,2002,4(8):400-405.
[9]MENG Ju,WANG Jin-hai,ZHANG Cheng.Digital Synthetic-Heterodyne Interferometric Demodulation Based on Embedded System[J].Semiconductor Photonics and Technology,2006,12(3):194-199.
[10]王金海,陈才和,Zoran Salcic,等.三维推挽式顺变柱体干涉型加速度传感系统[J].光电工程,2006,33(6):139-144.WANG Jin-hai,CHEN Cai-he,Zoran Salcic,et al.System of Three-Dimension Push-Pull Cylinders Interference Acceleration Senor[J].Opto-Electronic Engineering,2006,33(6):139-144.
[11]傅深泳,丁桂兰,陈才和,等.干涉型全光纤加速度地震检波器[J].光电工程,2003,30(6):39-42.FU Shen-yong,DING Gui-lan,CHEN Cai-he,et al.An All-Fiber Interference Type Acceleration Seismic Detector[J].Opto-electronic Engineering,2003,30(6):39-42.
[12]Koo K P,Tveten A B,Dandridge A.Passive Stabilization Scheme for Fiber Interferometers Using(3×3)Fiber Directional Couplers[J].Appt.Phys.Lett,1982,41(7):616-618.
[13]Cameron C B,Keolian R M,Garrett S L.A Symmetric Aanlogue Demodulator for Optical Fiber Interferametric Sensors[J].Proceedings of the34th Midwest Symposium,1991,30(2):666-671.
[14]Sheem S K.Optical Fiber Interferometers with3×3Directional Couplers Analysis[J].J Appl Phys,1982,52(6):1267-1277.
[15]Brown D A,Cameron C B,Keolian R M.A Symmetric3×3Coupler Based Demodulator for Fiber Optic Interferometric Sensors[J].SPIE,1991,20(2):1584-1590.
[16]李东,张晓晖,黄俊斌.用基于3×3耦合器的干涉仪解调相移光纤光栅传感信号[J].传感技术学报,2004,17(3):460-462,452.LI Dong,ZHANG Xiao-hui,HUANG Jun-bin.Demodulation for Phase Shifted Grating Sensor By Interferometer Based On3×3Coupler[J].JOURNAL OF TRANSDUCTION TECHNOLOGY,2004,17(3):460-462,452.
[17]Zhiqiang Zhao,Suleyman Demokan M,Senior Member.Improved Demodulation Scheme for Fiber Optic Interferometers Using an Asymmetric3×3Coupler[J].Journal of Lightwave Technology,1997,15(11):2059-2068.
[18]江毅,娄英明,王惠文.基于对称3×3耦合器的光纤干涉信号的软件解调技术[J].光子学报,1998,27(2):152-155.JIANG Yi,LOU Ying-ming,WANG Hui-wen.Software Demodulation for3×3Coupler Based Fiber Optic Interferometer[J].ACTA PHOTOICA SINICA,1998,27(2):152-155.
[19]陈东明,刘伟平,张多英,等.基于Labview6.0的光纤布拉格光栅光学特性的仿真设计[J].光电工程,2002,29(S1):58-61.CHEN Dong-ming,LIU Wei-ping,ZHANG Duo-ying,et al.Simulation Design for Optical Property of Optic Fiber Bragg Grating Based on Labview6.0[J].Opto-electronic Engineering,2002,29(S1):58-61.
[20]King Damien,Lyons William B,Flanagan Colin,et al.An Optical-Fiber Sensor for Use in Water Systems Utilizing Digital Signal Processing Techniques and Artificial Neural Network Pattern Recognition[J].IEEE Sensors Journal,2004,4(1):21-27.
[21]彭保进,张敏,寥延彪,等.光纤传感器相位漂移及倍频问题的解决方法[J].光电子·激光,2005,16(8):913-917.PENG Bao-jin,ZHANG Min,LIAO Yan-biao,et al.The Method for Resolving Phase Shifting and Frequency Doubling of Fiber-Optic Sensors[J].Journal of Optoelectronics Laser,2005,16(8):913-917.
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