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Laser & Optoelectronics Progress, Volume. 61, Issue 23, 2306004(2024)

Detection of Orbital Angular Momentum of Light Based on Shear Interferometer and Residual Network Model

Guanhua Liu, Jingwen Zhou, Jihong Tang, and Yong Xia*
Author Affiliations
  • State Key Laboratory of Precision Spectroscopy, Joint Insititute of Advanced Science and Technology, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
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    Figures&Tables (8)
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    References (35)
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    Figures & Tables(8)
    Experimental schematic diagram of shear interferometer for identifying OAM

    Fig. 1. Experimental schematic diagram of shear interferometer for identifying OAM

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    Optical path diagram of shear interferometer

    Fig. 2. Optical path diagram of shear interferometer

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    Hologram, intensity distribution, and beam phase distribution of OAM beams generated by shear interference with different l values

    Fig. 3. Hologram, intensity distribution, and beam phase distribution of OAM beams generated by shear interference with different l values

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    Residual network model based on ResNet-50 architecture

    Fig. 4. Residual network model based on ResNet-50 architecture

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    Influence of training sample number on OAM recognition accuracy

    Fig. 5. Influence of training sample number on OAM recognition accuracy

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    Intensity distribution of OAM beams under different atmospheric turbulence conditions

    Fig. 6. Intensity distribution of OAM beams under different atmospheric turbulence conditions

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    Image training accuracy, loss function curve, and confusion matrix under different turbulence intensity conditions. (a)(b) Cn2 = 5×10-16 m-2/3; (c)(d) Cn2 = 5×10-15 m-2/3; (e)(f) Cn2 = 5×10-14 m-2/3

    Fig. 7. Image training accuracy, loss function curve, and confusion matrix under different turbulence intensity conditions. (a)(b) Cn2 = 5×10-16 m-2/3; (c)(d) Cn2 = 5×10-15 m-2/3; (e)(f) Cn2 = 5×10-14 m-2/3

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    Relationship between different turbulence intensities and OAM detection accuracy

    Fig. 8. Relationship between different turbulence intensities and OAM detection accuracy

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    Guanhua Liu, Jingwen Zhou, Jihong Tang, Yong Xia. Detection of Orbital Angular Momentum of Light Based on Shear Interferometer and Residual Network Model[J]. Laser & Optoelectronics Progress, 2024, 61(23): 2306004

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Feb. 18, 2024

    Accepted: Apr. 18, 2024

    Published Online: Dec. 6, 2024

    The Author Email: Yong Xia (yxia@phy.ecnu.edu.cn)

    DOI:10.3788/LOP240685

    CSTR:32186.14.LOP240685

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology