三分量全保偏光纤加速度传感器的研究
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摘要
报道了三分量全保偏光纤加速度传感器的实验研究结果。传感器由6个弹性柱体共同支撑1个质量块构成三分量结构,由3个迈克尔逊全保偏光纤干涉仪共用一个光源组成。光学部分采用全保偏光纤干涉仪结构,消除了干涉光束偏振态随机变化引起的信号衰落,采用光频调制相位载波解调信号处理技术,消除了相位随机漂移引起的信号衰落,从而实现了对加速度信号的稳定检测。传感器的工作频带为5~500 Hz,加速度灵敏度达到660 rad/g,系统最小可测相位差为10-5rad,最小可测加速度达1.5×10-7m/s2,工作频带内加速度灵敏度变化小于2 dB。三轴加速度灵敏度和频率响应曲线与理论分析的结果基本一致。
The experimental results of three-component all polarization-maintaining fiber optic accelerometer are presented.The three-component accelerometer is composed of a seismic mass supported by six compliant cylinders and three Michelson all polarization maintaining fiber optic interferometers which share one laser.The all polarization-maintaining fiber optic interferometer structure can prevent signal fading due to random changes in the state of polarization of the guided beams.With phase generated carrier technology,the signal fading caused by random phase-shift in the interferometer is eliminated.Based on these methods,the fiber optic accelerometer attained stable signal.Operating frequency band of the sensor is from 5 Hz to 500 Hz.The acceleration sensitivity in experimental results reaches 660 rad/g.In this system,minimum measurable phase is 10~(-5) rad and minimum measurable acceleration reaches 1.5×10~(-7) m/s~2.Variation in acceleration sensitivity is not greater than 2 dB in operating frequency band.The results of experiment agree well with the theoretical analysis.
The experimental results of three-component all polarization-maintaining fiber optic accelerometer are presented.The three-component accelerometer is composed of a seismic mass supported by six compliant cylinders and three Michelson all polarization maintaining fiber optic interferometers which share one laser.The all polarization-maintaining fiber optic interferometer structure can prevent signal fading due to random changes in the state of polarization of the guided beams.With phase generated carrier technology,the signal fading caused by random phase-shift in the interferometer is eliminated.Based on these methods,the fiber optic accelerometer attained stable signal.Operating frequency band of the sensor is from 5 Hz to 500 Hz.The acceleration sensitivity in experimental results reaches 660 rad/g.In this system,minimum measurable phase is 10~(-5) rad and minimum measurable acceleration reaches 1.5×10~(-7) m/s~2.Variation in acceleration sensitivity is not greater than 2 dB in operating frequency band.The results of experiment agree well with the theoretical analysis.
引文
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2 R.D.Pechstedt,D.A.Jackson.Performance analysis of afiber optic accelerometer based on a compliant cylinder design[J].Rev.Sci.Instrum.,1995,66(1):207~214
3 Xiong Shuidong,Luo Hong,Hu Yongminget al..Research oninterferometric polarization maintaining fiber optic micro-vibration vector sensor[J].Chinese J.Lasers,2004,31(7):843~847熊水东,罗洪,胡永明等.干涉型保偏光纤微振动矢量传感器研究[J].中国激光,2004,31(7):843~847
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5 Luo Hong,Xiong Shuidong,Chen Ruhuiet al..Design andexperiment of all polarization maintaining fiber optic vectoraccelerometer[J].Semiconductor Optoelectronics,2004,25(3):242~245罗洪,熊水东,陈儒辉等.全保偏光纤加速度矢量传感器的设计与实验[J].半导体光电,2004,25(3):242~245
6 Ding Guilan,Liu Zhenfu,Chen Caiheet al..The design ofthree-component all-fiber optic acceleration seismometer[J].J.Optoelectronics.Laser,2002,13(1):50~52丁桂兰,刘振富,陈才和等.三分量全光纤加速度地震检波器的设计[J].光电子.激光,2002,13(1):50~52
7 Yan Zhigang,Ding Guilan,Chen Caiheet al..Threecomponent all fiber acceleration seismometer and digitalprocessing system[J].Acta Optica Sinica,2003,23(12):1413~1417严志刚,丁桂兰,陈才和等.三分量全光纤加速度检波器及数字处理系统[J].光学学报,2003,23(12):1413~1417
8 Ding Guilan,Liu Zhenfu,Cui Yuminget al..An all-fiber opticaccelerometer based on compliant cylinders[J].Acta OpticaSinica,2002,22(3):340~343丁桂兰,刘振富,崔宇明等.顺变柱体型全光纤加速度检波器[J].光学学报,2002,22(3):340~343
9 Hu Yongming,Chen Zhe,Meng Zhouet al..An allpolarization-maintaining fiber Michelson interferometer[J].Chinese J.Lasers,1997,A24(10):891~894胡永明,陈哲,孟洲等.全保偏光纤迈克尔逊干涉仪[J].中国激光,1997,A24(10):891~894
10 A.Dandridge,A.B.Tveten,T.G.Giallorenzi.Homodynedemodulation scheme for fiber optic sensors using phasegenerated carrier[J].IEEE Trans.on Microwave Theory andTechniques,1982,MTT-30(10):1635~1641
11 GB/T 17251-1998 Acoustics-Calibration method of hydrophoneacceleration sensitivity[S]中华人民共和国国家标准,声学水听器加速度灵敏度校准方法[S].标准号:GB/T 17251-1998
2 R.D.Pechstedt,D.A.Jackson.Performance analysis of afiber optic accelerometer based on a compliant cylinder design[J].Rev.Sci.Instrum.,1995,66(1):207~214
3 Xiong Shuidong,Luo Hong,Hu Yongminget al..Research oninterferometric polarization maintaining fiber optic micro-vibration vector sensor[J].Chinese J.Lasers,2004,31(7):843~847熊水东,罗洪,胡永明等.干涉型保偏光纤微振动矢量传感器研究[J].中国激光,2004,31(7):843~847
4 Luo Hong,Chen Ruhui,Xiong Shuidonget al..Research onmandrel interferometric polarization maintaining fiber opticaccelerometer[J].J.Optoelectronics.Laser,2004,15(6):675~678罗洪,陈儒辉,熊水东等.芯轴式干涉型保偏光纤加速度传感器研究[J].光电子.激光,2004,15(6):675~678
5 Luo Hong,Xiong Shuidong,Chen Ruhuiet al..Design andexperiment of all polarization maintaining fiber optic vectoraccelerometer[J].Semiconductor Optoelectronics,2004,25(3):242~245罗洪,熊水东,陈儒辉等.全保偏光纤加速度矢量传感器的设计与实验[J].半导体光电,2004,25(3):242~245
6 Ding Guilan,Liu Zhenfu,Chen Caiheet al..The design ofthree-component all-fiber optic acceleration seismometer[J].J.Optoelectronics.Laser,2002,13(1):50~52丁桂兰,刘振富,陈才和等.三分量全光纤加速度地震检波器的设计[J].光电子.激光,2002,13(1):50~52
7 Yan Zhigang,Ding Guilan,Chen Caiheet al..Threecomponent all fiber acceleration seismometer and digitalprocessing system[J].Acta Optica Sinica,2003,23(12):1413~1417严志刚,丁桂兰,陈才和等.三分量全光纤加速度检波器及数字处理系统[J].光学学报,2003,23(12):1413~1417
8 Ding Guilan,Liu Zhenfu,Cui Yuminget al..An all-fiber opticaccelerometer based on compliant cylinders[J].Acta OpticaSinica,2002,22(3):340~343丁桂兰,刘振富,崔宇明等.顺变柱体型全光纤加速度检波器[J].光学学报,2002,22(3):340~343
9 Hu Yongming,Chen Zhe,Meng Zhouet al..An allpolarization-maintaining fiber Michelson interferometer[J].Chinese J.Lasers,1997,A24(10):891~894胡永明,陈哲,孟洲等.全保偏光纤迈克尔逊干涉仪[J].中国激光,1997,A24(10):891~894
10 A.Dandridge,A.B.Tveten,T.G.Giallorenzi.Homodynedemodulation scheme for fiber optic sensors using phasegenerated carrier[J].IEEE Trans.on Microwave Theory andTechniques,1982,MTT-30(10):1635~1641
11 GB/T 17251-1998 Acoustics-Calibration method of hydrophoneacceleration sensitivity[S]中华人民共和国国家标准,声学水听器加速度灵敏度校准方法[S].标准号:GB/T 17251-1998
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