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View article: Coupling optimized bending-insensitive multi-core fibers for lensless endoscopy
Coupling optimized bending-insensitive multi-core fibers for lensless endoscopy Open
We report a bending-insensitive multi-core fiber (MCF) for lensless endoscopy imaging with modified fiber geometry that enables optimal light coupling in and out of the individual cores. In a previously reported bending insensitive MCF (tw…
View article: Miniature 120-beam coherent combiner with 3D-printed optics for multicore fiber-based endoscopy
Miniature 120-beam coherent combiner with 3D-printed optics for multicore fiber-based endoscopy Open
In this Letter, we report a high-efficiency, miniaturized, ultra-fast coherent beam, combined with 3D-printed micro-optics directly on the tip of a multicore fiber bundle. The highly compact device footprint (180 µm in diameter) facilitate…
View article: Double clad tubular anti-resonant hollow core fiber for nonlinear microendoscopy
Double clad tubular anti-resonant hollow core fiber for nonlinear microendoscopy Open
We report the fabrication and characterization of the first double clad tubular anti-resonant hollow core fiber. It allows to deliver ultrashort pulses without temporal nor spectral distortions in the 700-1000 nm wavelength range and to ef…
View article: Flexible lensless endoscope with a conformationally invariant multi-core fiber
Flexible lensless endoscope with a conformationally invariant multi-core fiber Open
The lensless endoscope represents the ultimate limit in miniaturization of imaging tools: an image can be transmitted through a (multi-mode or multi-core) fiber by numerical or physical inversion of the fiber's pre-measured transmission ma…
View article: Supplementary document for Flexible lensless endoscope with a conformationally invariant multi-core fiber - 4086407.pdf
Supplementary document for Flexible lensless endoscope with a conformationally invariant multi-core fiber - 4086407.pdf Open
Experimental setup and techniques; fabrication of twisted MCF; analytical and FEM models of twisted MCF
View article: Single-shot noninterferometric measurement of the phase transmission matrix in multicore fibers
Single-shot noninterferometric measurement of the phase transmission matrix in multicore fibers Open
A simple technique for far-field single-shot noninterferometric determination of the phase transmission matrix of a multicore fiber with over 100 cores is presented. This phase retrieval technique relies on the aperiodic arrangement of the…
View article: Single-shot non-interferometric measurement of the phase transmission matrix in multicore fibers
Single-shot non-interferometric measurement of the phase transmission matrix in multicore fibers Open
A simple technique for far-field single-shot non-interferometric determination of the phase transmission matrix of a multicore fiber with over 100 cores is presented. This phase retrieval technique relies on the aperiodic arrangement of th…
View article: Nonlinear imaging through a Fermat’s golden spiral multicore fiber
Nonlinear imaging through a Fermat’s golden spiral multicore fiber Open
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, and mode density to achieve a sidelobe contrast of at le…
View article: Bending-induced inter-core group delays in multicore fibers
Bending-induced inter-core group delays in multicore fibers Open
We examine the impact of fiber bends on ultrashort pulse propagation in a 169-core multicore fiber (MCF) by numerical simulations and experimental measurements. We show that an L-shaped bend (where only one end of the MCF is fixed) induces…
View article: External Control of Dissipative Coupling in a Heterogeneously Integrated Photonic Crystal—SOI Waveguide Optomechanical System
External Control of Dissipative Coupling in a Heterogeneously Integrated Photonic Crystal—SOI Waveguide Optomechanical System Open
Cavity optomechanical systems with an enhanced coupling between mechanical motion and electromagnetic radiation have permitted the investigation of many novel physical effects. The optomechanical coupling in the majority of these systems i…
View article: Ultrathin endoscopes based on multicore fibers and adaptive optics: a status review and perspectives
Ultrathin endoscopes based on multicore fibers and adaptive optics: a status review and perspectives Open
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 endoscopes intended for multiphoton imaging applications. We put th…
View article: Superharmonic resonances in a two-dimensional non-linear photonic-crystal nano-electro-mechanical oscillator
Superharmonic resonances in a two-dimensional non-linear photonic-crystal nano-electro-mechanical oscillator Open
We investigate the non-linear mechanical dynamics of a nano-optomechanical mirror formed by a suspended membrane pierced by a photonic crystal. By applying to the mirror a periodic electrostatic force induced by interdigitated electrodes i…