PhotoniX, Volume. 5, Issue 1, 8(2024)

Three-channel robust optical encryption via engineering coherence Stokes vector of partially coherent light

Yonglei Liu1, Zhen Dong1, Yimeng Zhu1, Haiyun Wang2, Fei Wang1、*, Yahong Chen1、**, and Yangjian Cai3,4、***
Author Affiliations
  • 1School of Physical Science and Technology & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
  • 2Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
  • 3Shandong Provincial Engineering and Technical Center of Light Manipulation & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • 4Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University, East China Normal University, Shanghai 200241, China
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    Optical encryption strategies utilizing fully coherent light have been widely explored but often face challenges such as speckle noise and beam instabilities. In this work, we introduce a novel protocol for multi-channel optical information encoding and encryption using vectorial spatial coherence engineering of a partially coherent light beam. By characterizing the beam’s spatial coherence structure with a $$2 \times 2$$ coherence matrix, we demonstrate independent control over the three components of the coherence Stokes vector. This allows for three-channel optical information encoding and encryption, with applications in color image representation. Unlike existing methods based on fully coherent light modulations, our approach utilizes a two-point dependent coherence Stokes vector, proving resilient to random noise in experimental scenarios. Our findings provide a robust foundation for higher-dimensional optical encoding and encryption, addressing limitations associated with partially coherent light in complex environments.


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    Yonglei Liu, Zhen Dong, Yimeng Zhu, Haiyun Wang, Fei Wang, Yahong Chen, Yangjian Cai. Three-channel robust optical encryption via engineering coherence Stokes vector of partially coherent light[J]. PhotoniX, 2024, 5(1): 8

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    Paper Information

    Category: Research Articles

    Received: Jan. 18, 2024

    Accepted: Mar. 11, 2024

    Published Online: Apr. 9, 2024

    The Author Email: Wang Fei (, Chen Yahong (, Cai Yangjian (