Results 61 to 70 of about 38,360 (284)
Measurement + Control, 2020 The paper reports an adaptive-network-based fuzzy inference system for the measurement of axial strain using long-period fiber grating sensors. The long-period fiber grating sensor supports optical resonances, which are sensitive to the change of axial ...
Xingliu Hu +3 more
doaj +1 more source
Slow light with flat or offset band edges in multi-mode fiber with two gratings
, 2007 We consider mode coupling in multimode optical fibers using either two Bragg gratings or a Bragg grating and a long-period grating. We show that the magnitude of the band edge curvature can be controlled leading to a flat, quartic band-edge or to two ...
de Sterke, C. Martijn +3 more
core +1 more source
Advanced Materials Technologies, EarlyView.This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee +5 more
wiley +1 more source
Biosensing with optical fiber gratings
Nanophotonics, 2017 Optical fiber gratings (OFGs), especially long-period gratings (LPGs) and etched or tilted fiber Bragg gratings (FBGs), are playing an increasing role in the chemical and biochemical sensing based on the measurement of a surface refractive index (RI ...
Chiavaioli Francesco +4 more
doaj +1 more source
Optically Heated Long-Period Grating as Temperature-Insensitive Fiber-Optic Refractive-Index Sensor
IEEE Photonics Journal, 2012 A temperature-insensitive fiber-optic refractive-index sensor based on optically heated long-period grating (LPG) is presented. The LPG is manufactured in a short section of cobalt-doped optical fiber (COF), which can be thermally stabilized through a ...
Yebin Zhang, Shaorui Gao, A. Ping Zhang
doaj +1 more source
Advanced Materials Technologies, EarlyView.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source
Fabrication of High-Sensitivity Optical Fiber Sensor by an Improved Arc-Discharge Heating System
Sensors, 2023 We proposed a high-sensitivity optical fiber sensor based on a dual-resonance helical long-period fiber grating (HLPG). The grating is fabricated in a single-mode fiber (SMF) by using an improved arc-discharge heating system. The transmission spectra and
Chao Ma, Jian Wang, Libo Yuan
doaj +1 more source
, 2010 The spectral characteristics of a fiber Bragg grating (FBG) with a transversely inhomogeneous refractive index profile, differs con- siderably from that of a transversely uniform one.
Andreas Tünnermann +30 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