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基于光栅螺旋扫描和SPGD算法的单模光纤耦合方法

Single-Mode Fiber Coupling Based on Raster Spiral Scanning and SPGD Algorithm

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摘要

自由空间光通信系统需要将空间光高效耦合到单模光纤中,但聚焦光斑与单模光纤间的初始对准误差和随机横向偏移会导致极大的耦合损耗。对空间光到单模光纤耦合的理论模型进行了阐述,并分析了横向偏移及随机抖动对耦合效率的影响。在此基础上,为了提高光纤耦合效率,提出了一种基于光栅螺旋扫描算法和随机并行梯度下降(SPGD)算法的耦合方案,并仿真分析了误差校正过程及其对耦合效率的改善情况。仿真结果表明:通过设定最佳扫描步长,光栅螺旋扫描算法能够有效地校正初始对准误差,校正成功概率高于99%;校正后的残余初始对准误差集中在0.5~6.5 μm范围内,耦合效率得到初步改善;开启SPGD控制算法后,聚焦光斑与单模光纤间的随机横向偏移得到校正,耦合效率能够有效提升至0.81,接近无湍流情况下的理论极限。校正后,耦合效率得到显著提高。

Abstract

For free-space optical communication systems, spatial light must be efficiently coupled into the single-mode fiber first. However, the initial alignment error and the random lateral deviation existed between focused spot and single-mode fiber lead to a dramatic coupling loss. A theoretical model of coupling the spatial light into single-mode fiber is expounded, and the effects of the lateral deviation and the random jitter on coupling efficiency are analyzed. On this basis, in order to improve the fiber coupling efficiency, a coupling scheme based on raster spiral scanning algorithm and stochastic parallel gradient descent (SPGD) algorithm is proposed. Simulations on the process of error correction and the improvement of coupling efficiency after error correction are carried out. The results show that, by setting the optimal scanning step, the initial alignment error can be efficiently corrected by raster spiral scanning algorithm, the success probability of initial alignment error correction can be higher than 99%. The residual initial alignment error focuses in 0.5-0.6 μm, and the coupling efficiency has been improved perliminarily. By adopting the SPGD algorithm, the random lateral deviation between focused spot and single-mode fiber can be corrected, and the coupling efficiency also rises to 0.81, which approaches the theoretical limit without turbulence. After the correction, the coupling efficiency is significantly improved.

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中图分类号:TN929.12

DOI:10.3788/lop54.060602

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金(61308082)、中国科学院科技创新基金(YJ16K004)

收稿日期:2017-01-13

修改稿日期:2017-02-16

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吴子开:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209中国科学院大学, 北京 100049
陈 莫:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209中国科学院大学, 北京 100049
刘 超:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209
鲜 浩:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209

联系人作者:吴子开(kaiser34@163.com)

备注:吴子开(1992-),男,硕士研究生,主要从事光通信方面的研究。

【1】Jiang Huilin, An Yan, Zhang Yalin, et al. Analysis of the status quo, development trend and key technologies of space laser communication[J]. Journal of Spacecraft TT&C Technology, 2015, 34(3): 207-217.
姜会林, 安 岩, 张雅琳, 等. 空间激光通信现状、发展趋势及关键技术分析[J]. 飞行器测控学报, 2015, 34(3): 207-217.

【2】Wu Yunyun, Li Xinyang, Rao Changhui. Effect of atmospheric turbulence aberration on the bit-error performance of homodyne binary phase shift keying coherent optical communication[J]. Acta Optica Sinica, 2013, 33(6): 0606002.
武云云, 李新阳, 饶长辉. 大气湍流像差对空间零差二进制相移键控相干光通信误码性能的影响[J]. 光学学报, 2013, 33(6): 0606002.

【3】Chen M, Liu C, Xian H. Experimental demonstration of single-mode fiber coupling over relatively strong turbulence with adaptive optics[J]. Applied Optics, 2015, 54(29): 8722-8726.

【4】Winzer P J, Leeb W R. Fiber coupling efficiency for random light and its applications to lidar[J]. Optics Letters, 1998, 23(13): 986-988.

【5】Andrews L C, Phillips R L. Laser beam propagation through random media[M]. Bellingham: SPIE Press, 2005.

【6】Morio T. Maximum fiber coupling efficiency and optimum beam size in the presence of random angular jitter for free-space laser systems and their applications[J]. Journal of the Optical Society of America A, 2006, 23(9): 2246-2250.

【7】Weyrauch T, Vorontsov M A, Gowens J, et al. Fiber coupling with adaptive optics for free-space optical communication[C]. SPIE, 2002, 4489: 177-184.

【8】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.
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.

【9】Hideki T, Morio T, Yoshihisa T. Experimental verification of fiber-coupling efficiency for satellite-to-ground atmospheric laser downlinks[J]. Optics Express, 2012, 20(14): 15301-15308.

【10】Han Qiqi, Wang Qiang, Ma Jing, et al. Experimental research on vibration influence and compensation of space light to fiber coupling efficiency[J]. Infrared and Laser Engineering, 2014, 43(3): 933-939.
韩琦琦, 王 强, 马 晶, 等. 振动对空间光-光纤耦合效率影响及补偿实验研究[J]. 红外与激光工程, 2014, 43(3): 933-939.

【11】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): 0606001.
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): 0606001.

【12】Zhao Fang. Research on receiving performance of intersatellite laser communication systems based on single-mode fiber coupled self-homodying detection[D]. Harbin: Harbin Institute of Technology, 2011.
赵 芳. 基于单模光纤耦合自差探测星间光通信系统接收性能研究[D]. 哈尔滨: 哈尔滨工业大学, 2011.

引用该论文

Wu Zikai,Chen Mo,Liu Chao,Xian Hao. Single-Mode Fiber Coupling Based on Raster Spiral Scanning and SPGD Algorithm[J]. Laser & Optoelectronics Progress, 2017, 54(6): 060602

吴子开,陈 莫,刘 超,鲜 浩. 基于光栅螺旋扫描和SPGD算法的单模光纤耦合方法[J]. 激光与光电子学进展, 2017, 54(6): 060602

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