Presentation
18 June 2024 Reference-free phase retrieval of multimode fibers enhanced by physics-driven neural network
Yuan Sui, Qian Zhang, Stefan Rothe, Jürgen Czarske
Author Affiliations +
Abstract
Analysing the optical field of multimode fibers by intensity images machine learning for design in photonics-based sensing and imaging applications. However, existing mathematical algorithms, iterative methods, or AI algorithms encounter scalability issues. In this study, we incorporate the physics principle of mode superposition into neural networks for mode decomposition. This integration eliminates the need for an extensive amount of training data and the time-consuming training process. The proposed method, without pre-training, can effectively perform mode decomposition for up to 220 modes. With the extracted amplitude and phase information, the correlation coefficient between the reconstructed optical field and the original image surpasses 98%. Investigations with noisy data demonstrate the network's efficiency in extracting both phase and magnitude information, even when the signal-to-noise ratio of the image is as low as 1dB which is crucial for secure data communication with multimode fibers.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuan Sui, Qian Zhang, Stefan Rothe, and Jürgen Czarske "Reference-free phase retrieval of multimode fibers enhanced by physics-driven neural network", Proc. SPIE PC13017, Machine Learning in Photonics, PC1301707 (18 June 2024); https://doi.org/10.1117/12.3017502
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KEYWORDS
Multimode fibers

Data modeling

Neural networks

Phase retrieval

Modal decomposition

Education and training

Evolutionary algorithms

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