A scanning-free wide-field single-fiber endoscopic image retrieval method based on optical transmission matrix

Cao, Xu; Zhuang, Bin; Geng, Yi; Hui, Chen; Ren, Liyong; Wu, Zhaoxin

doi:10.1088/1555-6611/ab0365

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…The light manipulation method was proposed [9], known as wavefront shaping, to focus light through a highly scattering medium with the help of a spatial light modulator [10][11][12]. There have been many remarkable signs of progress such as the investigation of transmission matrix to describe the light propagation in a complex medium [13][14][15][16] and the presence of reflection matrix method to imaging through highly scattering tissue [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Imaging and Focusing Through Scattering Medium Based on Reflection Matrix Optical Coherence Tomography

Cao

Wang

2022

Springer Proceedings in Physics

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Multiple scattering inside the random medium limits the imaging depth of optical coherence tomography (OCT) to 1-2 mm, as well as the degree of focus at the deep imaging depth. In this paper, by combining the concept of matrix measurement with a wide-field optical coherence tomography, we have done two aspects of work. The first one is for deeper imaging depth. By reconstructing the huge reflection matrix of the sample and then applying a time-reversal operation to it, we successfully filter out the single scattered light for imaging at the depth of 15 times of the scattering mean free path (SMFP). Since the imaging depth of conventional OCT is 6-7 times of the SMFP, our proposed reflection matrix optical coherence tomography (RMOCT) is about one time deeper than the conventional OCT. The second part of the work is a high-speed wavefront shaping (WFS) method based on a one-time in-and-out complex light field analysis. With the help of a phase-only spatial light modulator, we realize the light focusing through a random medium is ~113 ms. It is about three times faster than the iterative feedback wavefront shaping method. We believe that our work might pave the way to apply WFS to optical imaging methods and open new methods toward deeper imaging through a scattering medium.

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Section: Introductionmentioning

confidence: 99%

Imaging and Focusing Through Scattering Medium Based on Reflection Matrix Optical Coherence Tomography

Cao

Wang

2022

Springer Proceedings in Physics

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Single-fiber Computational Endoscopic Imaging

Ren

Cao

2020

Imaging and Applied Optics Congress

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High-fidelity multi-channel optical information transmission through scattering media

Shao,

Ding,

Liu

et al. 2024

Opt. Express

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High-fidelity optical information transmission through strongly scattering media is challenging, but is crucial for the applications such as the free-space optical communication in a haze or fog. Binarizing optical information can somehow suppress the disruptions caused by light scattering. However, this method gives a compromised communication throughput. Here, we propose high-fidelity multiplexing anti-scattering transmission (MAST). MAST encodes multiple bits into a complex-valued pattern, loads the complex-valued pattern to an optical field through modulation, and finally employs a scattering matrix-assisted retrieval technique to reconstruct the original information from the speckle patterns. In our demonstration, we multiplexed three channels and MAST achieved a high-fidelity transmission of 3072 (= 1024× 3) bits data per transmission and average transmission error as small as 0.06%.

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A scanning-free wide-field single-fiber endoscopic image retrieval method based on optical transmission matrix

Cited by 4 publications

References 33 publications

Imaging and Focusing Through Scattering Medium Based on Reflection Matrix Optical Coherence Tomography

Imaging and Focusing Through Scattering Medium Based on Reflection Matrix Optical Coherence Tomography

Single-fiber Computational Endoscopic Imaging

High-fidelity multi-channel optical information transmission through scattering media

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