保偏光纤侧视光强相关峰锐度的定轴方法

翁晓泉; 冯迪; 黄怀波; 赵正琪

doi:doi:10.3788/irla201645.1122001

红外与激光工程, 2016, 45 (11): 1122001, 网络出版: 2017-01-20

保偏光纤侧视光强相关峰锐度的定轴方法

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

论文大纲

翁晓泉 ^*冯迪黄怀波赵正琪

作者单位

北京航空航天大学仪器科学与光电工程学院, 北京 100191

摘要

在保偏光纤偏振轴的定位和对准技术中, 侧视成像法为目前的主要方法。现有的侧视成像法对光强形貌特征具有较高要求, 为了提高它们的通用性, 提出了基于侧视光强相关峰锐度的定轴方法。该方法首先通过侧视光强曲线间的相关运算得到相关系数曲线, 进而利用相关系数曲线的峰值尖锐程度作为特征值。相比于传统侧视成像法, 该方法不受光强形貌特征的限制, 因此具有更强的通用性。为了提高该方法的精度, 对不同观测平面的定轴精度进行了比较, 从而确定了具有理想定轴精度的观测平面范围。在此基础之上, 对该方法的实际精度进行了实验验证, 结果表明: 利用该方法可以获得优于0.9°的定轴精度。

Abstract

The side-view-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 light-intensity distribution characteristics, almost all of the side-view-image methods were of low applicability. In order to improve the applicability of side-view-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 light-intensity profiles, then the peak′s sharpness degree of correlation coefficient profiles was denoted as characteristic value. Compared with traditional side-view-image methods, the novel method was not restricted by light-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.

参考文献

[1] 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)

[2] 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)

[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)

翁晓泉, 冯迪, 黄怀波, 赵正琪. 保偏光纤侧视光强相关峰锐度的定轴方法[J]. 红外与激光工程, 2016, 45(11): 1122001. Weng Xiaoquan, Feng Di, Huang Huaibo, Zhao Zhengqi. Alignment method based on peak′s sharpness degree of correlation coefficient profile of side-view images for polarization maintaining fibers[J]. Infrared and Laser Engineering, 2016, 45(11): 1122001.

保偏光纤侧视光强相关峰锐度的定轴方法

关于本站 Cookie 的使用提示

全站搜索

保偏光纤侧视光强相关峰锐度的定轴方法

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索