Alignment method based on peak's sharpness degree of correlation coefficient profile of sid-view images for polarization maintaining fibers

Weng Xiaoquan; Feng Di; Huang Huaibo; Zhao Zhengqi

doi:10.3788/IRLA201645.1122001

The sid-vie-image methods are playing important roles in the location and alignment of birefringent axes of Polarization Maintaining (PM) fibers. However, due to be restricted by ligh-intensity distribution characteristics, almost all of the sid-vie-image methods were of low applicability. In order to improve the applicability of sid-vie-image methods, a new alignment algorithm based on the peak's sharpness degree of correlation coefficient profile was developed. Correlation coefficient profiles were acquired by calculating the correlation among ligh-intensity profiles, then the peak's sharpness degree of correlation coefficient profiles was denoted as characteristic value. Compared with traditional sid-vie-image methods, the novel method was not restricted by ligh-intensity characteristics, so it shows excellent applicability. To improve the precision of angle orientation, alignment accuracy was measured on different observation planes in a series of experiments and the observation position with high alignment precision was acquired. Finally, the alignment precision of these position was analyzed with the help of practical experiment. According to the experiment result, alignment accuracy better than 0.9 is achieved.

Alignment method based on peak's sharpness degree of correlation coefficient profile of sid-view images for polarization maintaining fibers

1. Department of Instrument Science and Opt-electronics Engineering,Beihang University,Beijing 100191,China

Received Date: 2016-03-05

Rev Recd Date: 2016-04-15

Publish Date: 2016-11-25

Key words:

Abstract: The sid-vie-image methods are playing important roles in the location and alignment of birefringent axes of Polarization Maintaining (PM) fibers. However, due to be restricted by ligh-intensity distribution characteristics, almost all of the sid-vie-image methods were of low applicability. In order to improve the applicability of sid-vie-image methods, a new alignment algorithm based on the peak's sharpness degree of correlation coefficient profile was developed. Correlation coefficient profiles were acquired by calculating the correlation among ligh-intensity profiles, then the peak's sharpness degree of correlation coefficient profiles was denoted as characteristic value. Compared with traditional sid-vie-image methods, the novel method was not restricted by ligh-intensity characteristics, so it shows excellent applicability. To improve the precision of angle orientation, alignment accuracy was measured on different observation planes in a series of experiments and the observation position with high alignment precision was acquired. Finally, the alignment precision of these position was analyzed with the help of practical experiment. According to the experiment result, alignment accuracy better than 0.9 is achieved.

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Reference (14)

[1]	Wang Xiaxiao, Qin Yi, Wang Ye, et al. Errors of fiber delay line polarization crosstalk for all fiber optical current sensor[J]. Optics and Precision Engineering, 2014, 22(11):2930-2936. (in Chinese)
[2]	Wu Jing, Wu Hanping, Huang Junbin, et al. Research progress in signal demodulation technology of fiber Bragg grating sensors[J]. Chinese Optics, 2014, 7(4):519-531. (in Chinese)
[3]	Xu Guoquan, Xiong Daiyu. Applications of fiber Bragg grating sensing technology in engineering[J]. Chinese Optics, 2013, 6(3):306-317. (in Chinese)
[4]	Zhang Wei, Wang Lefeng, Rong Weibin, et al. Coaxial adjustment in PMF alignments[J]. Optics and Precision Engineering, 2014, 22(1):125-131. (in Chinese)
[5]	Lang Xiaoping, Li Xiaoying. Research on polarization measurement method of single-mode PM fiber[J]. Journal of Beijing Institude of Machinery, 2005, 20(1):25-27. (in Chinese)
[6]	Gao Hongyu, Chen Caihe, Cui Yuming, et al. Locating the position of the slow and fast birefringent axes by elasto-optic effect[J]. Chinese Journal of Sensors and Actuators, 2005, 18(1):184-187. (in Chinese)
[7]	Guo Zhenwu, Ye Wenting, Zhang Hongxia, et al. Analysis and measurement of alignment angle of PMF devices[J]. Journal of Optoelectronics Laser, 2011, 22(5):645-648.
[8]	Zheng Wenxin. Automated fusion-splicing of polarization maintaining fibers[J]. Journal of Lightwave Technology, 1997, 5(1):125-134.
[9]	Kenichiroh Itoh. Method of fusion-splicing polarization maintaining optical fibers:US Patent, 5013345[P]. 1991-05-07.
[10]	Wang Jin'e, Lin Zhehui, Wu Yulie, et al. The auto-alignment technique of PM fiber of MRI[J]. Applied Optics, 2005, 26(5):37-40. (in Chinese)
[11]	Huang Linsheng, Zhang Jun, Chen Zhe, et al. Simulation and experiment analysis of azimuth aligning technology for polarization maintaining fiber[J]. Infrared And Laser Engineering, 2010, 39(2):279-284. (in Chinese)
[12]	Zheng Wenxin. Auto-aligning and splicing PM-fibers of different types with a passive methods[C]//Fiber Optic Gyros:20th Anniversary Conference, 1996, 2837:356-376.
[13]	Liu Zhenhua, Feng Di, Yang Dewei, et al. Accurate detection technology for polarization axis of Panda polarization-maintaining fiber[J]. Infrared and Laser Engineering, 2014, 43(10):3388-3393. (in Chinese)
[14]	Wang Dongyun, Liu Cheng, Shu Xiaowu, et al. Accurate alignment of PM fiber[J]. Acta Photonica Sinica, 2002, 31(3):345-348. (in Chinese)

Alignment method based on peak's sharpness degree of correlation coefficient profile of sid-view images for polarization maintaining fibers

doi: 10.3788/IRLA201645.1122001

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