Optical refocusing through perturbed multimode fiber using Cake-Cutting Hadamard encoding algorithm to improve robustness

Spatial Light Modulators
Bessel-/ Airy Beam Generation Materials Processing / Optical Fabrication Pulse Application / -Shaping
Published on:
Authors: Zhang, Chuncheng; Yao, Zheyi; Qin, Zhengyue; Gu, Guohua; Chen, Qian; Xie, Zhihua; Liu, Guodong; Sui, Xiubao
Abstract:

Multimode fibres offer the advantages of high resolution and miniaturization over single-mode fibers in optical imaging. However, multimode fibre’s imaging is susceptible to perturbations of MMF that can lead to secondary spatial distortions in the transmitted image. Perturbations include random disturbances in the fiber as well as environmental noise. Here, we exploit the fast focusing capability of the Cake-Cutting Hadamard algorithm to counteract the effects of perturbations and improve the system’s robustness. Simulation shows that it can approach the theoretical enhancement at 2000 measurements. Experimental results show that the algorithm can help the system to refocus in a short time when MMFs are perturbed. This research will further contribute to using multimode fibres in medicine, communication, and detection.

Restricted Access

Publication: Optics and Lasers in Engineering
Issue/Year: Volume 164, May 2023, 107487
DOI: 10.1016/j.optlaseng.2023.107487
Link: https://doi.org/10.1016/j.optlaseng.2023.107487

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