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 develo** ultrathin endoscopes
assisted by wave front sha**. We focus our review on multicore fiber-based lensless …

BPM-Matlab: an open-source optical propagation simulation tool in MATLAB

M Veettikazhy, A Kragh Hansen, D Marti… - Optics …, 2021 - opg.optica.org
We present the use of the Douglas-Gunn Alternating Direction Implicit finite difference
method for computationally efficient simulation of the electric field propagation through a …

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 …

[HTML][HTML] Hybrid multimode-multicore fibre based holographic endoscope for deep-tissue neurophotonics

Y Du, S Turtaev, IT Leite, A Lorenz, J Kobelke… - Light: Advanced …, 2022 - light-am.com
In-vivo microendoscopy in animal models became a groundbreaking technique in
neuroscience that rapidly expands our understanding of the brain. Emerging hair-thin …

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 …

Extended field-of-view in a lensless endoscope using an aperiodic multicore fiber

S Sivankutty, V Tsvirkun, G Bouwmans, D Kogan… - Optics letters, 2016 - opg.optica.org
We investigate lensless endoscopy using coherent beam combining and aperiodic multicore
fibers (MCF). We show that diffracted orders, inherent to MCF with periodically arranged …

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 …

A review of label-free photonics-based techniques for cancer detection in the digestive and urinary systems

G Castro-Olvera, E Baria, D Stoliarov… - Journal of Physics …, 2024 - iopscience.iop.org
For a long time, it has been known that optics can provide a broad range of tools for
addressing clinical needs, particularly diagnostics. Optical techniques can help in identifying …

Single-shot polarimetry imaging of multicore fiber

S Sivankutty, ER Andresen, G Bouwmans, TG Brown… - Optics letters, 2016 - opg.optica.org
We report an experimental test of single-shot polarimetry applied to the problem of real-time
monitoring of the output polarization states in each core within a multicore fiber bundle. The …