arXiv subjects

Caroline Boudoux

Publications and source records attributed to Caroline Boudoux.

4 recordsLinked to original sources

arXiv2026

Modal response sensitivity to polarization across photonic lantern architectures

This paper examines the polarization-dependent output of various types of 3-mode photonic lanterns fabricated using double-clad fibers. We explore the sensitivity of the modal response across several types of photonic lanterns, from the fully symmetric and strongly coupled structure of regular photonic lanterns to the fully asymmetric structure of mode-selective photonic lanterns. We demonstrate the high sensitivity of the output of photonic lanterns with strong coupling between their ports to the polarization of the input state. In contrast, ports with high isolation or low coupling, such as in mode-selective photonic lanterns, exhibit responses that are almost polarization independent.

physics.optics↗

arXiv2026

Simultaneous plane illumination and detection in confocal microscopy using a mode-selective photonic lantern

Confocal microscopy is the cornerstone of cellular biology and biomedical research due to its non-destructive imaging, compatibility with live cells, sensitivity, optical sectioning, and subcellular resolution. To meet the demand for rapid three-dimensional imaging, we propose a novel approach using a mode-selective photonic lantern (MSPL). This fiber-based device transforms single-mode light into multiple linearly polarized modes, allowing simultaneous detection of multiple planes. Using a four-port MSPL to manipulate three group modes (LP$_{01}$, LP$_{11}$, and LP$_{21}$), we demonstrate high-throughput imaging simultaneously with multiple planes. This technique exploits differences in focus sections across modes, enabling individual multi-plane detection via a spatial division multiplexer, with some trade-off in resolution and field of view.

physics.optics↗

arXiv2024

Three-Mode Photonic Lanterns: Comprehensive Analysis from Theory to Experiments

The design space for photonic lanterns is large and complex, making it challenging to identify optimal parameters to achieve specific performances, such as coupling, bandwidth, and insertion loss. Effectively navigating this space requires modeling tools capable to extract the most characterizing parameters. This work contrasts theoretical modeling with experimental realizations of the four possible types of $3\times1$ photonic lanterns using double-clad fibers, covering a spectrum from conventional to hybrid to mode-specific configurations. This work highlights the experimental characteristics of each photonic lantern.

physics.optics↗

arXiv2024

Mode-Selective Photonic Lanterns with Double-Clad Fibers

We present the design, fabrication, and characterization of mode-selective photonic lanterns using double-clad fibers. Here, we exploited several custom-pulled double-clad fibers to achieve the symmetry break required to excite higher-order modes. The resulting components are short and exhibit high modal isolation and low excess loss. They address some of the limitations of existing photonic lanterns in terms of fragility and coupling efficiency. The fabrication process involves the use of lower-index capillary tubes to maintain fiber geometry during fusion and tapering. Through the use of varying first cladding diameters, mode selectivity is achieved without sacrificing single-mode compatibility. This in turn allows proper real-time characterization during the whole fabrication process. Results demonstrate that double-clad fibers stacked inside a fluoride-doped capillary tube feature high modal isolation (above 60dB) and low excess loss (lower than 0.49dB), over a broad wavelength range (more than 250nm) with steeper taper profiles, and more robust components. The use of less expensive synthetic fused silica capillary tubes achieves high modal isolation (above 20dB) and excess loss lower than 2dB over the same broad wavelength range.

physics.optics↗