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Traditional laser range technology has a poor phase measurement accuracy and an additional phase of the system, which restricts the improvement of its accuracy. In this article, by using the technology of variable frequency measurement based on double polarization modulation the phase shift range-finding technology is improved. With the method of double polarization modulation, the demodulation of the phase information is directly implemented on the phase modulator, which can make the system simpler. The variable frequency technology is used to replace the traditional phase discrimination technology; therefore the measurement accuracy of the system will not be persecuted with the phase crimination any more. The theoretical curve of sine (cosine) relation between modulation frequency and output light intensity is proved experimentally. Owing to the fact that the stability of frequency can be better than 10-6, the measurement accuracy can reach ±10.6 u m@4.5 m. By using this system to measuring a 200 m-long fiber, the clear curve of modulation frequency versus output of system is obtained.
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Keywords:
- laser distance measurement /
- variable frequency distance measurement /
- double polarization modulation
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[2] Xing S J, Zhang F M, Cao S Y, Wang G W, Qu X H 2013 Acta Phys. Sin. 62 170603 (in Chinese)[邢书剑, 张福民, 曹士英, 王高文, 曲兴华 2013 物理学报 62 170603]
[3] Shelus P J 2001 Surv. Geophys. 22 517
[4] Qing P, Chen W, Song Y J, Hu M L, Chai L, Wang Q Y 2012 Acta Phys. Sin. 61 240601 (in Chinese)[秦鹏, 陈伟, 宋有建, 胡明列, 柴路, 王清月 2012 物理学报 61 240601]
[5] Smullin L D, Fiocco G 1962 Nature 194 1267
[6] Bobroff N 1993 Meas. Sci. Technol. 4 907
[7] Liu M, Yang X Y, Liu C J 2012 Chin. J. Lasers 39 0208004 (in Chinese) [刘邈，杨学友，刘常杰 2012 中国激光 39 0208004]
[8] Wang G C, Yan S H, Yang J, Lin C B, Yang D X, Zou P F 2013 Acta Phys. Sin. 62 070601 (in Chinese)[王国超, 颜树华, 杨俊, 林存宝, 杨东兴, 邹鹏飞 2013 物理学报 62 070601]
[9] Amann M, Bosch T, Myllyla R, Rioux M, Lescure M 2001 Opt. Eng. 40 10
[10] Xu H, Li X Y, Xiao X, Li Z Y, Yu Y D, Yu J Z 2013 Chin. Phys. B 22 114212
[11] Hirota Y, Hattori R 2006 Opt. Express 14 4486
[12] Bosch T, Lescure M 1997 IEEE Trans. Instrum. Meas. 46 1224
[13] Guo D M, Wang M 2007 Appl. Opt. 46 1486
[14] Qin J X, Xi L X, Zhang X G, Tian F 2011 Chin. Phys. B 20 114201
[15] Lo Y, Hsu P 2002 Opt. Eng. 41 2764
[16] Poujouly S, Journet B 2002 J. Opt. A: Pure Appl. Opt. 4 s356
[17] Yoon H, Hong J, Huisung K, Kyihwan P 2008 International Conference on Control, Automation and Systems Seoul, Korea, October 14-17, 2008 p2280
[18] Yu D Y, Tan H Y 2005 The Optical Engineering (Beijing: Machinery Industry Press) p306 (in Chinese) [郁道银, 谈恒英 2005 工程光学 (北京: 机械工业出版社) 第306页]
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[1] White N 2000 Nature 407 146
[2] Xing S J, Zhang F M, Cao S Y, Wang G W, Qu X H 2013 Acta Phys. Sin. 62 170603 (in Chinese)[邢书剑, 张福民, 曹士英, 王高文, 曲兴华 2013 物理学报 62 170603]
[3] Shelus P J 2001 Surv. Geophys. 22 517
[4] Qing P, Chen W, Song Y J, Hu M L, Chai L, Wang Q Y 2012 Acta Phys. Sin. 61 240601 (in Chinese)[秦鹏, 陈伟, 宋有建, 胡明列, 柴路, 王清月 2012 物理学报 61 240601]
[5] Smullin L D, Fiocco G 1962 Nature 194 1267
[6] Bobroff N 1993 Meas. Sci. Technol. 4 907
[7] Liu M, Yang X Y, Liu C J 2012 Chin. J. Lasers 39 0208004 (in Chinese) [刘邈，杨学友，刘常杰 2012 中国激光 39 0208004]
[8] Wang G C, Yan S H, Yang J, Lin C B, Yang D X, Zou P F 2013 Acta Phys. Sin. 62 070601 (in Chinese)[王国超, 颜树华, 杨俊, 林存宝, 杨东兴, 邹鹏飞 2013 物理学报 62 070601]
[9] Amann M, Bosch T, Myllyla R, Rioux M, Lescure M 2001 Opt. Eng. 40 10
[10] Xu H, Li X Y, Xiao X, Li Z Y, Yu Y D, Yu J Z 2013 Chin. Phys. B 22 114212
[11] Hirota Y, Hattori R 2006 Opt. Express 14 4486
[12] Bosch T, Lescure M 1997 IEEE Trans. Instrum. Meas. 46 1224
[13] Guo D M, Wang M 2007 Appl. Opt. 46 1486
[14] Qin J X, Xi L X, Zhang X G, Tian F 2011 Chin. Phys. B 20 114201
[15] Lo Y, Hsu P 2002 Opt. Eng. 41 2764
[16] Poujouly S, Journet B 2002 J. Opt. A: Pure Appl. Opt. 4 s356
[17] Yoon H, Hong J, Huisung K, Kyihwan P 2008 International Conference on Control, Automation and Systems Seoul, Korea, October 14-17, 2008 p2280
[18] Yu D Y, Tan H Y 2005 The Optical Engineering (Beijing: Machinery Industry Press) p306 (in Chinese) [郁道银, 谈恒英 2005 工程光学 (北京: 机械工业出版社) 第306页]
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