Non‐Uniform Programmable Photonic Waveguide Meshes
Laser &Photonics Reviews, EarlyView.Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley +1 more source
Speckle-correlation imaging through a kaleidoscopic multimode fiber. [PDF]
Proc Natl Acad Sci U S A, 2023 Bouchet D +5 more
europepmc +1 more source
NIR/VIS Dual‐Comb Spectroscopy Comparing High and Low Repetition Rate Regimes
Laser &Photonics Reviews, EarlyView.This work compares dual‐comb spectroscopy at lower and higher repetition rates, emphasizing the inherent trade‐off between spectral and temporal resolution. The 80 MHz system provides high‐resolution spectra suitable for analyzing complex molecular structures, whereas the free‐running 1 GHz platform enables fast measurements for real‐time trace gas ...
Alexander Eber +6 more
wiley +1 more source
Efficient dispersion modeling in optical multimode fiber. [PDF]
Light Sci Appl, 2023 Lee SY, Parot VJ, Bouma BE, Villiger M.
europepmc +1 more source
Multimode Phonon Lasing via Self‐Induced Optical Coherent Pumping
Laser &Photonics Reviews, EarlyView.A silicon optomechanical nanobeam generates self‐sustained phonon lasing in multiple competing mechanical modes via self‐pulsing, an intrinsic optical modulation arising from cavity nonlinearity. This self‐organized mechanism enables robust multi‐frequency operation spanning periodic, quasi‐periodic, and chaotic regimes without external modulation. The
David Alonso Tomás +5 more
wiley +1 more source
Optical Multimode Fiber-Based Pipe Leakage Sensor Using Speckle Pattern Analysis. [PDF]
Sensors (Basel), 2023 Philosof J +4 more
europepmc +1 more source
MXene‐Based Flexible Memory and Neuromorphic Devices
Small, EarlyView.The unique two‐dimensional structure, excellent electrical conductivity, and diverse surface groups of MXenes have garnered significant attention. Coupled with their exceptional flexibility, MXene‐based devices hold immense potential for flexible memory and neuromorphic systems. This review comprehensively discusses the fundamentals of flexible devices,
Yan Li +13 more
wiley +1 more source
Information distribution on regions of speckle patterns for imaging of multimode fiber. [PDF]
Heliyon, 2023 Liu S, Sun Y, Liu W, Xiao F, Song H.
europepmc +1 more source
Quasi‐BIC and Reflective Mode Coupling Drives SHG Beyond the Q Factor Limit
Small, EarlyView.An analytical expression is developed to relate second‐harmonic generation to both the resonance Q factor and absorptance. Simulations and experiments on a dual‐resonance 3R‐MoS2 metasurface validate the formula, showing that absorptance engineering provides an effective route to enhance SHG beyond conventional Q‐only design.
Wenkai Yang +8 more
wiley +1 more source
Pressure stimulus study on acupuncture points with multi-channel multimode-fiber diffuse speckle contrast analysis (MMF-DSCA). [PDF]
Biomed Opt Express, 2023 Park JY, Choi G, Lee K.
europepmc +1 more source