Automatic alignment method and realization of space optical coupling

Ke Xizheng; Luo Jing; Lei Sichen

doi:10.3788/IRLA201847.0103009

The sticking point of spatial light-single-mode fiber is to find the best position in the transverse plane of fiber precisely. Based on optical fiber migration's influence on the spatial light-single-mode fiber coupling efficiency, an auto-coupling system was proposed, which mainly consisted of two-dimensional piezoceramics, driver, controller, photoelectric detector which was a closed loop control system and coupling lens. The automatic alignment coupling of the spatial light-fiber was realized by combining with simulated annealing algorithm. The coupling efficiency for free-space laser coupling into the fibers and simulated annealing algorithm were analyzed theoretically. Analysis results of experiment show that the method can make the system search the best position automatically based on the power of the light which is coupled into the single-mode fiber. The optimal coupling efficiency is about 51.4%, which can be obtained in short times by the system and it is improved by 6.5% compared with no automatic alignment before. The scheme is practical and it is of great significance for the study of the automatic coupling of spatial light-single-mode fiber.

Automatic alignment method and realization of space optical coupling

1. Institute of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710048,China

Received Date: 2017-06-10

Rev Recd Date: 2017-08-20

Publish Date: 2018-01-25

Key words:

Abstract: The sticking point of spatial light-single-mode fiber is to find the best position in the transverse plane of fiber precisely. Based on optical fiber migration's influence on the spatial light-single-mode fiber coupling efficiency, an auto-coupling system was proposed, which mainly consisted of two-dimensional piezoceramics, driver, controller, photoelectric detector which was a closed loop control system and coupling lens. The automatic alignment coupling of the spatial light-fiber was realized by combining with simulated annealing algorithm. The coupling efficiency for free-space laser coupling into the fibers and simulated annealing algorithm were analyzed theoretically. Analysis results of experiment show that the method can make the system search the best position automatically based on the power of the light which is coupled into the single-mode fiber. The optimal coupling efficiency is about 51.4%, which can be obtained in short times by the system and it is improved by 6.5% compared with no automatic alignment before. The scheme is practical and it is of great significance for the study of the automatic coupling of spatial light-single-mode fiber.

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Reference (15)

[1]	Zhang S, Zhang Z, Cai L, et al. Laser injecting method from free space beam to single-mode fiber using single lens[J]. High Power Laser Particle Beams, 2014, 26(3):031006.
[2]	Cui Ning, Chen Xinglin, Cao Kairui, et al. Fuzzy active disturbance rejection control of fine tracking system for free space optical communication[J]. Optics and Precision Engineering, 2015, 23(5):1394-1400. (in Chinese)崔宁, 陈兴林, 曹开锐, 等. 空间光通信精跟踪系统的模糊自抗扰控制[J]. 光学精密工程, 2015, 23(5):1394-1400.
[3]	Wang Qiang. The research of the influence caused by vibration on the coupling efficiency of space light to fiber and compensation method[D]. Harbin:Harbin Institute of Technology, 2009. (in Chinese)王强. 振动对空间光-光纤耦合效率影响及补偿方法研究[D]. 哈尔滨:哈尔滨工业大学, 2009.
[4]	Li Feng, Geng Chao, Li Xinyang, et al. Technical research of adaptive fiber coupler array based on SPGD algorithm[J]. Infrared and Laser Engineering, 2015, 44(7):2156-2161.(in Chinese)李枫, 耿超, 李新阳, 等. 基于SPGD算法的自适应光纤耦合器阵列技术研究[J]. 红外与激光工程, 2015, 44(7):2156-2161.
[5]	Chen Xuekun, Zhang Lu, Wu Zhiyong. Coupling efficiency of free-space laser coupling into single mode fiber and photonic crystal fiber[J]. Chinese Optics, 2013, 6(2):208-215. (in Chinese)陈雪坤, 张璐, 吴志勇. 空间激光与单模光纤和光子晶体光纤的耦合效率[J]. 中国光学, 2013, 6(2):208-215.
[6]	Dikmelik Y, Davidson F M. Fiber-coupling efficiency for free-space optical communication through atmospheric turbulence[J]. Applied Optics, 2005, 44(23):4946-4952.
[7]	Xiong Zhun, Ai Yong, Shan Xin, et al. Fiber coupling efficiency and compensation analysis for free space optical communication[J]. Infrared and Laser Engineering, 2013, 42(9):2510-2514. (in Chinese)熊准, 艾勇, 单欣, 等. 空间光通信光纤耦合效率及补偿分析[J]. 红外与激光工程, 2013, 42(9):2510-2514.
[8]	Shi Guanghui. Improved method for semiconductor laser coupling[J]. Chinese Optics, 2013, 6(3):343-352. (in Chinese)史光辉. 半导体激光耦合新方法[J]. 中国光学, 2013,6(3):343-352.
[9]	Song Hongfei, Che Ying, Zhao Xin. Improvement of fiber coupling efficiency in atmospheric turbulence[J]. Optics and Precision Engineering, 2014, 22(12):3205-3211.(in Chinese)宋鸿飞, 车英, 赵馨. 湍流环境中光纤耦合效率的提高[J]. 光学精密工程, 2014, 22(12):3205-3211.
[10]	Gao Hao, Yang Huajun, Xiang Jinsong. Auto-coupling method for making space light into single-mode fiber[J]. Opto-Electronic Engineering, 2007, 34(8):126-129. (in Chinese)高皓, 杨华军, 向劲松. 一种实现空间光-单模光纤的自动耦合方法[J]. 光电工程, 2007, 34(8):126-129.
[11]	Takenaka H, Toyoshima M, Takayama Y. Experimental verification of fiber-coupling efficiency for satellite-to-ground atmospheric laser downlinks[J]. Optics Express, 2012, 20(14):15301.
[12]	Zhang R, Wang J, Zhao G, et al. Fiber-based free-space optical coherent receiver with vibration compensation mechanism[J]. Optics Express, 2013, 21(15):18434.
[13]	Luo Wen, Geng Chao, Li Xinyang. Simulation and experimental study of single-mode fiber coupling efficiency affected by atmospheric turbulence aberration[J]. Acta Optica Sinica, 2014, 34(6):38-44. (in Chinese)罗文, 耿超, 李新阳. 大气湍流像差对单模光纤耦合效率的影响分析及实验研究[J]. 光学学报, 2014, 34(6):38-44.
[14]	Lei Sichen, Ke Xizheng, Shao Junhu. Experimental study about fiber array coupling and auto-alignment[J]. Laser Technology, 2014, 38(2):191-195. (in Chinese)雷思琛, 柯熙政, 邵军虎. 空间光-光纤阵列耦合自动对准实验研究[J]. 激光技术, 2014, 38(2):191-195.
[15]	Gao Jianqiu, Sun Jianfeng, Li Jiawei, et al. Coupling method for making space light into single-mode fiber based on laser nutation[J]. Chinese Journal of Lasers, 2016, 43(8):0801001. (in Chinese)高建秋, 孙建锋, 李佳蔚, 等. 基于激光章动的空间光到单模光纤的耦合方法[J]. 中国激光, 2016, 43(8):0801001.

Automatic alignment method and realization of space optical coupling

doi: 10.3788/IRLA201847.0103009

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