空间光到少模光纤的耦合效率及影响因素  

Coupling Efficiency and Influence Factors of Spatial Light into Few-mode Fiber

作　　者：王超[1,2] 范雪冰[1,2] 佟首峰[2] 李英超[2] 江伦[1,2] 刘壮[2] 史浩东[2] 姜会林 WANG Chao;FAN Xue-bing;TONG Shou-feng;LI Ying-chao;JIANG Lun;LIU Zhuang;SHI Hao-dong;JIANG Hui-lin(School of Photo-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China;National and Local joint Engineering Research Center of Space Optoelectronics Technology,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学光电工程学院,长春130022 [2]长春理工大学空间光电技术国家与地方联合工程研究中心,长春130022

出　　处：《光子学报》2018年第12期1-8,共8页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61805028;61805027;61701045);长春理工大学青年科学基金(No.WQNJJ-2016-15);吉林省科技发展计划资助项目(No.20160204066GX);国家重点研究发展计划(No.2017YFC0803806)资助~~

摘　　要：建立了不同影响因素下空间光-少模光纤耦合效率的理论模型.以两模光纤为例分析了相对孔径对耦合效率的影响,当相对孔径为0.17时,耦合效率最高为82.96%.研究了倾斜、离焦、随机角抖动等因素对少模光纤耦合效率的影响.实验测得当横向偏移量为4μm时,两模光纤的耦合效率比单模光纤高10.23%;当轴向偏移量为125μm时,两模光纤的耦合效率比单模光纤高11.24%;当随机抖动幅度标准差为5μm时,两模光纤的耦合效率比单模光纤高12.1%.结果表明少模光纤对信号光接收过程中的干扰因素如倾斜、离焦和随机角抖动都有很好的抑制作用.The coupling efficiency theory model of the spatial light into few-mode fiber in the different influence factor is established.Takes two-mode fiber for example to study the relative aperture effect on coupling efficiency.When the relative aperture is 0.17,the highest coupling efficiency is 82.96%.The coupling efficiency in the presence of tilt,defocus and random angular jitter is studied,the experiment show that when the lateral offset is 4μm,the coupling efficiency of two-mode fiber is higher than single-mode fiber about 10.23%,when the axial offset is 125μm,the coupling efficiency of two-mode fiber is higher than single-mode fiber about 11.24%,when the random jitter amplitude is 5μm,the coupling efficiency of two-mode fiber is higher than single-mode fiber about 12.1%.Accordingly,the few-mode fiber can inhibit interference factor such as tilt,defocus and random angular jitter when the signal reception.

关 键 词：空间光通信 耦合效率 光纤耦合 少模光纤 前置光放大 相对孔径 随机角抖动 

分 类 号：O436[机械工程—光学工程]