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9 October 2021 A multimode fiber endoscopy utilizing fluorescence-based real-valued intensity transmission matrix (RVITM)
Shengfu Cheng, Tianting Zhong, Li Jin, Puxiang Lai
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Proceedings Volume 11896, Advanced Optical Imaging Technologies IV; 118960L (2021) https://doi.org/10.1117/12.2601342
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China
Abstract
A new multimode fiber micro-endoscopy that integrates fiber calibration and imaging phase is proposed. The approach utilizes the back-scattered patterns emitted by the fluorescence targets at the fiber distal end to reconstruct the reflection matrix by phase retrieval algorithm. Simulations show that selective focusing through the fiber is directly achieved using the eigenvectors decomposed from the reflection matrix. It is possible to reconstruct the full fluorescent objects based on speckle correlations. Further experiments will be conducted to explore the focusing and imaging performance. The fluorescence-based reflection matrix method has the potential for re-calibration in situ and robust imaging under moderate perturbations, promising for practical micro-endoscopic applications.
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Shengfu Cheng, Tianting Zhong, Li Jin, and Puxiang Lai "A multimode fiber endoscopy utilizing fluorescence-based real-valued intensity transmission matrix (RVITM)", Proc. SPIE 11896, Advanced Optical Imaging Technologies IV, 118960L (9 October 2021); https://doi.org/10.1117/12.2601342
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KEYWORDS
Multimode fibers
Calibration
Detection and tracking algorithms
Endoscopy
Luminescence
Phase retrieval
Reconstruction algorithms
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