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首页> 外文期刊>Optics Letters >Polarization-independent orbital angular momentum generator based on a chiral fiber grating
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Polarization-independent orbital angular momentum generator based on a chiral fiber grating

机译：基于手性光纤光栅的偏振无关的轨道角动量发电机

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摘要

A polarization-independent orbital angular momentum (OAM) generator, based on a chiral fiber grating (CFG), is proposed and demonstrated for the first time, to the best of our knowledge. Helical phases were successfully excited in this device for the arbitrary polarization states of the input light, and the resulting OAM modes could be produced with a desired polarization state. The employed CFG was fabricated by twisting a fused few-mode fiber during hydrogen-oxygen flame heating. The polarization characteristics, helical phase, and purity of the coupled modes in the CFG were experimentally investigated for varying input light polarization states. The results showed that the coupled higher-order modes had the same polarization as the input fundamental mode. The chirality of the excited OAM was polarization-independent and determined solely by the helicity of the CFG. The purity of the OAM mode was higher than 93% with a slight fluctuation of 2% which occurred during measurement processing. (C) 2018 Optical Society of America
机译：基于手性纤维光栅（CFG）的偏振无关的轨道角动量（OAM）发电机，并首次展示了我们的知识。在该装置中成功激发螺旋相对于输入光的任意偏振状态，并且可以用所需的偏振状态产生所得到的OAM模式。通过在氢气氧气加热期间扭转熔融的少量模纤维来制造所用的CFG。通过实验研究CFG中耦合模式的偏振特性，螺旋相和纯度以进行不同输入光偏振态。结果表明，耦合的高阶模式具有与输入基本模式相同的偏振。激发Oam的手性是偏振 - 无关，并仅通过CFG的肝脏确定。 OAM模式的纯度高于93％，测量处理期间发生的略微波动。 （c）2018年光学学会

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  • 来源
    《Optics Letters》 |2019年第1期|共4页
  • 作者

    Zhang Yan; Bai Zhiyong; Fu Cailing; Liu Shen; Tang Jian; Yu Jian; Liao Changrui; Wang Ying; He Jun; Wang Yiping;

  • 作者单位

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Key Lab Optoelect Devices &

    Syst Minist Educ &

    Guangdong Prov Coll Optoelect Engn Shenzhen 518060 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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