High-Speed All-Fiber Micro-Imaging with Large Depth of Field,Laser & Photonics Reviews

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High-Speed All-Fiber Micro-Imaging with Large Depth of Field
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-07-03 , DOI: 10.1002/lpor.202100724
Lele Wang ₁ , Yousi Yang ₁ , Zhoutian Liu ₁ , Jiading Tian ₁ , Yuan Meng ₁ , Tiancheng Qi ₁ , Tiantian He ₁ , Dan Li _{1,

2} , Ping Yan _{1,

2} , Mali Gong _{1,

2} , Qiang Liu _{1,

2} , Qirong Xiao _{1,

2}

Affiliation

Single fiber imaging has evolved into a powerful method for detecting minute objects in narrow spaces. However, existing systems are not conducive to imaging dynamic objects at depth due to their bulky probes, time-consuming scanning acquisition methods, and transmissive illumination mode. Minimally invasive reflection mode imaging with high spatial and temporal resolution remains an open challenge. Here, a precise and high-speed imaging scheme without scanning is proposed. Multimode fiber imaging technology is incorporated into an all-fiber aberration-free precision detection system. High temporal resolution (5000 fps) detection of tiny natural scenes is experimentally realized by optimizing the approximation of the inverse transmission matrix in a simple and compact setup. The system can display the detected screen in real-time and the computational imaging with a large depth of field (1 mm) is enabled by jointly learning. The recovery results are superior compared to typical deep neural networks. The demonstrated scheme offers a new possibility for many applications, for example, microendoscopy, all-optical computing, and remote high-speed video transmission.

中文翻译：

具有大景深的高速全光纤显微成像

单光纤成像已经发展成为一种在狭窄空间中检测微小物体的强大方法。然而，现有系统由于其庞大的探头、耗时的扫描采集方法和透射照明模式，不利于对深度动态物体进行成像。具有高空间和时间分辨率的微创反射模式成像仍然是一个开放的挑战。在此，提出了一种无需扫描的精确高速成像方案。多模光纤成像技术融入全光纤无像差精密检测系统。通过在简单紧凑的设置中优化逆传输矩阵的近似，实验性地实现了微小自然场景的高时间分辨率（5000 fps）检测。该系统可以实时显示检测到的屏幕，并通过联合学习实现大景深（1 mm）的计算成像。恢复结果优于典型的深度神经网络。演示的方案为许多应用提供了新的可能性，例如显微内窥镜、全光计算和远程高速视频传输。

更新日期：2022-07-03

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