大气信道激光通信系统光束偏振特性

doi:10.12382/bgxb.2021.0817

摘要/Abstract

摘要： 不同偏振特性光束受大气影响特性不尽相同，合理选取最优偏振态光束作为激光通信系统光源，可大大降低通信系统受大气湍流的影响。研究不同初始偏振态激光光束在大气中传输的光强闪烁效应，给出偏振态激光光束经大气传输后闪烁因子的表达式。设计并制作多参数高精度可控激光光源，并采用大气湍流模拟装置来模拟大气湍流，对不同初始偏振态激光光束在大气湍流中传输的光强闪烁效应进行实验研究。结果表明：当偏振角θ取值范围为45°≤θ＜90°时，光束经过大气湍流传输后的闪烁因子随着θ的增大而减小；当0°＜θ≤45°时，光束经过大气湍流传输后的闪烁因子随着θ的减小而减小；左旋圆偏振和右旋圆偏振激光光束的光强闪烁因子随湍流强度的变化趋势基本相同；与线偏振激光光束相比，左旋偏振光和右旋偏振光在相同的大气湍流强度下其光强闪烁因子均小于任何偏振角度的线偏振光；通过对激光通信系统的偏振态进行优化，可以有效抑制大气湍流对激光通信系统的影响，降低接收端光强起伏，降低激光通信系统误码率，有效提高激光通信系统性能。

关键词: 大气信道, 激光通信, 偏振态, 大气湍流, 光强闪烁, 偏振优化

Abstract: The intensity scintillation effects of different initial polarized laser beams transmitted in atmosphere are studied，while the expression of intensity scintillation of polarized laser beams is given. A new multi-parameter high-precision controllable laser light source was designed，and a simulation device was used for atmospheric turbulence simulation.The scintillation effects of laser beams with different initial polarization states in atmospheric turbulence were researched experimentally.The results show that the scintillation factor decreases with the increase in the polarizing angle when the polarizing angle is 45°≤ θ<90°. For 0°<θ≤45°，the scintillation factor decreases with the decrease in the polarizing angle.The scintillation factors of left- and right-hand circularly polarized laser beams vary with turbulence intensity in a similar way.Compared with linearly polarized laser beams，the intensity scintillation factors of left- and right-hand polarized laser beams under the same atmospheric turbulence are smaller than that of linearly polarized light at any polarizing angle. By optimizing the polarization state of the laser communication system，the influence of atmospheric turbulence on the laser communication system can be effectively suppressed，the intensity fluctuation of the receiver and the bit error rate of the laser communication system can be reduced，and the performance of the laser communication system can be effectively improved.

Key words: atmosphericchannel, lasercommunication, polarizationstate, atmosphericturbulence, intensityscintillation, polarizationoptimization

中图分类号:

E963

陶宗慧, 刘唯奇, 陈亚楠, 倪小龙, 娄岩, 刘显著, 姜会林. 大气信道激光通信系统光束偏振特性[J]. 兵工学报, 2022, 43(3): 481-488.

TAO Zonghui, LIU Weiqi, CHEN Yanan, NI Xiaolong, LOU Yan, LIU Xianzhu, JIANG Huilin. Polarization Characteristics of Laser Communication System in Atmospheric Channel[J]. Acta Armamentarii, 2022, 43(3): 481-488.

参考文献［1］

［1］

李海廷，胡鑫，曾双，等.大气湍流对半主动激光制导中光斑检测精度的影响[J].兵工学报，2021，42(2):297-307.LI H T，HU X，ZENG S，et al.Influence of atmospheric turbulence on detection accuracy of laser spot[J].Acta Armamentarii，2021，42(2):297-307.（in Chinese）[2］宋承天，张垚彦，刘强，等.气溶胶环境影响下连续波激光引信回波特性[J].兵工学报，2021，42(3):499-510.SONG C T，ZHANG Y Y，LIU Q，et al.Echo characteristics of continuous wave laser fuze in aerosol environment[J].Acta Armamentarii，2021，42(2):499-510.（in Chinese）[3］徐淼，史浩东，王超，等.空间目标多维度探测与激光通信一体化技术研究[J].中国激光，2021，48(12):223-235.XU M，SHI H D，WANG C，et al.Technology for integrating space object multidimensional detection and laser communication[J].Chinese Journal of Lasers，2021，48(12):223-235.（in Chinese）[4］王天枢，林鹏，董芳，等.空间激光通信技术发展现状及展望[J].中国工程科学，2020，22(3):92-99.WANG T S，LIN P，DONG F，et al.Progress and prospect of space laser communication technology[J].Strategic Study of CAE，2020，22(3):92-99.（in Chinese）[5］ NIBLACK W K，WOLF E H.Polarization modulation and demodulation of light[J].Applied Optics，1964，3(2)：277-279.[6］ ARAGO F.Astronomie populaire[M].Paris，France:Flammarion Cie，1899.[7］ VAN DER LAAN J D，SCRYMGEOUR D A，KEMME S A，et al.Detection range enhancement using circularly polarized light in scattering environments for infrared wavelengths[J]. Applied Optics，2015，54(9):2266-2274.[8］柯熙政，韩美苗，王明军.部分相干光在大气湍流中水平传输路径上的展宽与漂移[J].光学学报，2014，34(11): 70-74.KE X Z，HAN M M，WANG M J.Spreading and wander of partially coherent beam propagating along a horizontal-path in the atmospheric turbulence[J].Acta Optica Sinica，2014，34(11): 70-74. （in Chinese）[9］张磊，陈子阳，熊梦苏，等.部分相干光在大气湍流中传输的闪烁指数[J].强激光与粒子束，2014，26(9):71-75.ZHANG L，CHEN Z Y，XIONG M S，et al.Scintillation index of partially coherent beam propagating through atmospheric turbulence[J].High Power Laser and Particle Beams，2014，26(9):71-75.（in Chinese）[10］季晓玲，陈森会，李晓庆.部分相干电磁厄米-高斯光束通过湍流大气传输的偏振特性[J].中国激光，2008，35(1):67-72.JI X L，CHEN S H，LI X Q.Polarization properties of partially coherent electromagnetic Hermite-Gaussian beams in atmospheric turbulence[J].China Journal of Lasers，2008，35(1):67-72.（in Chinese）[11］ LIN Q，CAI Y J.Fourier transform form partially coherent Gaussian-Schell model beams[J].Optics Letters，2002，27(19):1672-1675.[12］陶向阳，周南润，吕百达.通过有光阑近轴ABCD光学系统激光束的近似解析传输公式[J].强激光与粒子束，2003，15(1): 50-54.TAO X Y，ZHOU N R，L B D. Approximate analytical propagation equations of laser beams through a paraxial optical ABCD system with aperture[J].High Power Laser and Particle Beams，2003，15(1):50-54.（in Chinese）[13］ WOLF E.Unified theory of coherence and polarization of random eleetromagnetic beams[J].Physics Letters A，2003，312(5/6):263-267.[14］ ANDREWS L C，PHILLIPS R L.Laser beam propagation through random media[M]. Bellingham，WA，US:SPIE Press，2005.[15］ NI X L，LIU Z.A new method to adjust the focusing and coherence characteristics of laser beam complexly using a liquid crystal spatial light modulator[C]∥Proceedings of International Conference on Optoelectronics and Microelectronics.Changchun，China:IEEE, 2015:276-279.[16］ TOYOSHIMA M，JONO T，NAKAGAWA K，et al.Optimum divergence angle of a Gaussian beam wave in the presence of random jitter in free-space laser communication systems[J].Journal of the Optical Society of America A，Optics，Image Science，and Vision，2002，19(3):567-571.[17］倪小龙，朱旭芳，于信，等.激光束散角复合控制技术[J].强激光与粒子束，2020，32(7): 46-53.NI X L，ZHU X F，YU X，et al.Laser beam coherence and divergence angle complex controlling technique[J]. High Power Laser and Particle Beams，2020，32(7):46-53.（in Chinese）[18］倪小龙，宋卢军，付强，等.热风对流式大气湍流模拟装置湍流模拟特性分析[J].光学学报，2015，35(增刊1):19-27.NI X L，SONG L J，FU Q，et al.Characteristic analysis of hot air convection atmospheric turbulence simulator[J].Acta Optica Sinica，2015，35(S1):19-27.（in Chinese）[19］倪小龙，宋卢军，姜会林，等.对流湍流池湍流特性与真实大气对比实验研究[J].激光与光电子学进展，2015，52(9):51-58. NI X L，SONG L J，JIANG H L，et al.Contrast experimental research on turbulence characteristics between a simulate turbulence and the real atmospheric turbulence[J].Laser & Optoelectronics Progress，2015，52(9):51-58.（in Chinese）[20］倪小龙，宋卢军，姜会林，等.对流式湍流模拟装置湍流模拟稳定性研究[J].激光与光电子学进展，2015，52(10):57-64. NI X L，SONG L J，JIANG H L，et al.Research on turbulence stability characteristic of convection turbulence simulator[J].Laser & Optoelectronics Progress，2015，52(10):57-64.（in Chinese）

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