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多模光纤散斑场的纵向偏振调控

Polarization Modulation Along Longitudinal Direction of Speckle Field Formed by Laser Beam Through Multimode Fiber

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摘要

相干光经过多模光纤传输, 在出射端形成一个随机的散斑场。对于非保偏多模光纤, 还将出现退偏现象, 使得入射的线偏振光不再保持线偏振分布。因此, 非保偏多模光纤散斑场的随机性不仅表现在光强方面, 也表现在偏振方面。基于反馈波前整形技术, 实现了对多模光纤出射端无序散斑场的光强和偏振的调控, 获得了光强集中的聚焦线, 并且可以有效控制聚焦线的偏振分布。

Abstract

A random speckle field is generated in the propagation of coherent light through a multimode fiber (MMF). For a non-polarization-maintaining MMF, linearly polarized incident light cannot maintain the linear polarization distribution owing to the depolarization effect. Therefore the randomness of the speckle pattern is observed in both intensity and polarization distributions. In this study, the intensity and polarization of the disordered speckle field generated by the MMF is controlled with the feedback wavefront shaping technology that generates a focal line with controllable polarization distribution.

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中图分类号:O436

DOI:10.3788/aos201939.0126018

所属栏目:“光场调控、传输及其应用”专题Ⅱ

基金项目:国家自然科学基金(11674111, 11504116, 61575070)、福建省自然科学基金(2017J01003)

收稿日期:2018-08-31

修改稿日期:2018-09-26

网络出版日期:2018-10-21

作者单位    点击查看

扎西巴毛:华侨大学信息科学与工程学院, 福建省光传输与变换重点实验室, 福建 厦门 361021
范伟如:华侨大学信息科学与工程学院, 福建省光传输与变换重点实验室, 福建 厦门 361021
胡显声:华侨大学信息科学与工程学院, 福建省光传输与变换重点实验室, 福建 厦门 361021
陈子阳:华侨大学信息科学与工程学院, 福建省光传输与变换重点实验室, 福建 厦门 361021
蒲继雄:华侨大学信息科学与工程学院, 福建省光传输与变换重点实验室, 福建 厦门 361021

联系人作者:陈子阳(ziyang@hqu.edu.cn)

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引用该论文

Zhaxi Bamao,Fan Weiru,Hu Xiansheng,Chen Ziyang,Pu Jixiong. Polarization Modulation Along Longitudinal Direction of Speckle Field Formed by Laser Beam Through Multimode Fiber[J]. Acta Optica Sinica, 2019, 39(1): 0126018

扎西巴毛,范伟如,胡显声,陈子阳,蒲继雄. 多模光纤散斑场的纵向偏振调控[J]. 光学学报, 2019, 39(1): 0126018

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