Results 71 to 80 of about 20,938 (278)
Sensors, 2023 In order to complete this set of three companion papers, in this last, we focus our attention on environmental monitoring by taking advantage of photonic technologies.
Giovanni Breglio +30 more
doaj +1 more source
Efficient superfluorescent light sources with broad bandwidth
, 1997 We demonstrate various efficient broad-band light sources at ~1µm wavelength with a 3dB bandwidth of up to 65nm at 108mW output power, based on rare-earth doped silica fibers and a simple adjustable spectral ...
Hanna, D.C. +3 more
core +1 more source
Frustration of Bragg reflection by cooperative dual-mode interference: a new mode of optical propagation [PDF]
, 1998 A new optical mode of propagation is described, which is the natural eigenmode (supermode) of a fiber (or any optical waveguide) with two cospatial periodic gratings.
Yariv, Amnon
core +1 more source
Advanced Materials Technologies, EarlyView.A broadband terahertz polarization rotator consisting of twistingly stacked silicon–air metagratings is designed based on the polarization guiding effect and experimentally shown to achieve 90° linear polarization rotation for both TE and TM incidences.
Yun‐Seok Choi +4 more
wiley +1 more source
Advances in Safe, Flexible, and Stretchable Batteries for Wearable Applications
Advanced Materials Technologies, EarlyView.Unlike previous reviews centered on component‐based deformability, this work highlights safety‐driven design strategies for flexible and stretchable batteries. By integrating material‐level engineering, geometry‐controlled structures, biocompatibility, and self‐protection mechanisms, it establishes a unified framework that connects mechanical ...
Hyewon Kang +4 more
wiley +1 more source
Strong Casimir force reduction through metallic surface nanostructuring [PDF]
, 2013 The Casimir force between bodies in vacuum can be understood as arising from their interaction with an infinite number of fluctuating electromagnetic quantum vacuum modes, resulting in a complex dependence on the shape and material of the interacting ...
A Canaguier-Durand +34 more
core +2 more sources
Long period grating resonances in photonic bandgap fiber
Optics Express, 2006 We demonstrate the formation of stress-induced long period gratings (LPGs) in fluid-filled photonic bandgap fiber (PBGF). Based on our experimental results, simulations, and theoretical understanding of LPGs, we identify coupling to a guided LP(11)-like mode of the core and lossy LP1x-like modes of cladding microstructure for a single grating period ...
P, Steinvurzel +4 more
openaire +2 more sources
Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song +8 more
wiley +1 more source
Advances on Optical Fiber Sensors
Fibers, 2013 In this review paper some recent advances on optical fiber sensors are reported. In particular, fiber Bragg grating (FBG), long period gratings (LPGs), evanescent field and hollow core optical fiber sensors are mentioned. Examples of recent optical fiber
Luciano Mescia, Francesco Prudenzano
doaj +1 more source
Responsive Visible‐Wavelength Metasurfaces from Porous Silicon Based on Fano Guided‐Mode Resonance
Advanced Optical Materials, EarlyView.The article introduces mesoporous silicon metasurfaces (pSi‐MS) supporting Fano guided‐mode resonances in the visible regime. By combining top‐down lithographic patterning of 2D gratings with bottom‐up electrochemical porosification, the approach realizes a new class of responsive metasurfaces, enabling highly sensitive and portable platforms for small
Tomoshree Dash +4 more
wiley +1 more source