Learning to see through multimode fibers

N Borhani, E Kakkava, C Moser, D Psaltis - Optica, 2018 - opg.optica.org
Deep neural networks (DNNs) are used to classify and reconstruct the input images from the
intensity of the speckle patterns that result after the inputs are propagated through …

Flexible-type ultrathin holographic endoscope for microscopic imaging of unstained biological tissues

W Choi, M Kang, JH Hong, O Katz, B Lee… - Nature …, 2022 - nature.com
Ultrathin lensless fibre endoscopes offer minimally invasive investigation, but they mostly
operate as a rigid type due to the need for prior calibration of a fibre probe. Furthermore …

Ultrathin endoscopes based on multicore fibers and adaptive optics: a status review and perspectives

ER Andresen, S Sivankutty, V Tsvirkun… - … of biomedical optics, 2016 - spiedigitallibrary.org
We take stock of the progress that has been made into developing ultrathin endoscopes
assisted by wave front shaping. We focus our review on multicore fiber-based lensless …

[HTML][HTML] Imaging through multimode fibers using deep learning: The effects of intensity versus holographic recording of the speckle pattern

E Kakkava, B Rahmani, N Borhani, U Teğin… - Optical Fiber …, 2019 - Elsevier
Abstract Information transmission through multimode fibers (MMFs) has been a topic of great
interest for many years. Deep learning algorithms have been applied successfully to MMFs …

Real-time complex light field generation through a multi-core fiber with deep learning

J Sun, J Wu, N Koukourakis, L Cao, R Kuschmierz… - Scientific reports, 2022 - nature.com
The generation of tailored complex light fields with multi-core fiber (MCF) lensless
microendoscopes is widely used in biomedicine. However, the computer-generated …

Selective femtosecond laser ablation via two-photon fluorescence imaging through a multimode fiber

E Kakkava, M Romito, DB Conkey, D Loterie… - Biomedical optics …, 2019 - opg.optica.org
We demonstrate the ability of a multimode fiber probe to provide two-photon fluorescence
(TPF) imaging feedback that guides the femtosecond laser ablation (FLA) in biological …

Calibration-free imaging through a multicore fiber using speckle scanning microscopy

N Stasio, C Moser, D Psaltis - Optics letters, 2016 - opg.optica.org
The images produced by multicore endoscopes are pixelated, and their resolution is limited
by the core-to-core spacing. Lenses can be used to improve the resolution, but this reduces …

Miniature 120-beam coherent combiner with 3D-printed optics for multicore fiber-based endoscopy

S Sivankutty, A Bertoncini, V Tsvirkun… - Optics Letters, 2021 - opg.optica.org
In this Letter, we report a<? TeX 2pc 0pt?> high-<? TeX 4pc 0pt?> efficiency, miniaturized,
ultra-fast coherent beam, combined with 3D-printed micro-optics directly on the tip of a …

Nonlinear imaging through a Fermat's golden spiral multicore fiber

S Sivankutty, V Tsvirkun, O Vanvincq, G Bouwmans… - Optics letters, 2018 - opg.optica.org
We report two-photon lensless imaging through a novel Fermat's golden spiral multicore
fiber. This unique layout optimizes the sidelobe levels, field of view, crosstalk, group delay …

Adaptive multiphoton endomicroscopy through a dynamically deformed multicore optical fiber using proximal detection

SC Warren, Y Kim, JM Stone, C Mitchell, JC Knight… - Optics express, 2016 - opg.optica.org
This paper demonstrates multiphoton excited fluorescence imaging through a polarisation
maintaining multicore fiber (PM-MCF) while the fiber is dynamically deformed using all …