Results 51 to 60 of about 67,680 (348)

Fiber Bragg Grating Based Thermometry [PDF]

NCSLI Measure, 2015
In recent years there has been considerable interest in developing photonic temperature sensors such as the Fiber Bragg gratings (FBG) as an alternative to resistance thermometry. In this study we examine the thermal response of FBGs over the temperature range of 233 K to 393 K.
Ahmed, Zeeshan, Filla, James, Guthrie, William, Quintavalle, John   +3 more
openaire   +3 more sources

Three-dimensional multichannel waveguide grating filters

Opto-Electronic Science
Distributed fiber gratings exhibit outstanding capabilities in achieving a wide spectral response through the superimposition of gratings with different periods in the fiber core.
Si-Yu Yin, Qi Guo, Shan-Ren Liu, Ju-Wei He, Yong-Sen Yu, Zhen-Nan Tian, Qi-Dai Chen   +6 more
doaj   +1 more source

Monitoring of Torque Induced Strain in Composite Shafts with Embedded and Surface-Mounted Optical Fiber Bragg Gratings

Sensors, 2021
In this study, silica glass, optical fiber Bragg gratings (FBGs) are used for torque-induced strain monitoring in carbon fiber reinforced polymer (CFRP) hollow shafts toward the development of a methodology for structural load monitoring.
Maria Konstantaki, Georgios Violakis, Georgios A. Pappas, Thomas Geernaert, Nikos Korakas, Nikos Tiriakidis, Thomai Tiriakidi, Kosmas Tiriakidis, Hugo Thienpont, Francis Berghmans, John Botsis, Stavros Pissadakis   +11 more
doaj   +1 more source

Efficient, broadband and compact metal grating couplers for silicon-on-insulator waveguides [PDF]

, 2007
Metal grating couplers for Silicon-on-Insulator waveguides are proposed. A silver grating coupler with 33% coupling efficiency is designed. A gold gating coupler prototype is fabricated using Focused Ion Beams demonstrating over 10% coupling efficiency. (
Baets, Roel, Scheerlinck, Stijn, Schrauwen, Jonathan, Taillaert, Dirk, Van Laere, Frederik, Van Thourhout, Dries   +5 more
core   +4 more sources

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

New multiplexing scheme for monitoring fiber optic Bragg grating sensors in the coherence domain

, 1997
A new multiplexing scheme for monitoring fiber optic Bragg gratings in the coherence domain has been developed. Grating pairs with different grating distances are distributed along a fiber line, and interference between their reflections is monitored ...
Dakin, J.P., Ecke, W., Rothardt, M., Schauer, J., Usbeck, K., Willsch, R.   +5 more
core   +1 more source

Bioresorbable optical fiber Bragg gratings [PDF]

Optics Letters, 2018
We demonstrate, for the first time, an inscription and wet dissolution study of Bragg gratings in a bioresorbable calcium-phosphate glass optical fiber. Bragg gratings, with average refractive index changes of 5.8×10-4, were inscribed using 193 nm excimer laser radiation.
Pugliese D., Konstantaki M., Konidakis I., Ceci-Ginistrelli E., Boetti N. G., Milanese D., Pissadakis S.   +6 more
openaire   +4 more sources

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Brillouin lasing in single-mode tapered optical fiber with inscribed fiber Bragg grating array

Results in Physics, 2018
A tapered optical fiber has been manufactured with an array of fiber Bragg gratings (FBG) inscribed during the drawing process. The total fiber peak reflectivity is 5% and the reflection bandwidth is ∼3.5 nm. A coherent frequency domain reflectometry has
S.M. Popov, O.V. Butov, Y.K. Chamorovskiy, V.A. Isaev, A.O. Kolosovskiy, V.V. Voloshin, I.L. Vorob'ev, M.Yu. Vyatkin, P. Mégret, M. Odnoblyudov, D.A. Korobko, I.O. Zolotovskii, A.A. Fotiadi   +12 more
doaj   +1 more source

Transmission Loss of Phase-Shifted Fiber Bragg Gratins in Lossy Materials: A Theoretical and Experimental Investigation [PDF]

, 2007
Narrow linewidth transmission filters in lossy materials based phase-shifted fiber Bragg gratings have been investigated experimentally and analytically.
Lit, John W.Y., Liu, Yu, Wei, Li
core   +1 more source