Results 1 to 10 of about 82,664 (317)
Coupled-core fiber Bragg gratings for low-cost sensing [PDF]
Scientific Reports, 2022 Sensors based on Bragg gratings inscribed in conventional single mode fibers are expensive due to the need of a sophisticated, but low-speed, interrogation system.
Jose A. Flores-Bravo +4 more
doaj +3 more sources
Review of Scientific Instruments, 1999 Since the discovery of photosensitivity in optical fibers there has been great interest in the fabrication of Bragg gratings within the core of a fiber. The ability to inscribe intracore Bragg gratings in these photosensitive fibers has revolutionized the field of telecommunications and optical fiber based sensor technology.
R. Kashyap
semanticscholar +4 more sources
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.
D. Pugliese +6 more
semanticscholar +5 more sources
Chebyshev apodized fiber Bragg gratings. [PDF]
Sci Prog, 2021 In this paper, a new apodized fiber Bragg grating (FBG) structure, the Chebyshev apodization, is proposed. The Chebyshev polynomial distribution has been widely used for the optimal design of antennas and filters, but it has not been used for designing FBGs.
Sun NH, Tsai MY, Liau JJ, Chiang JS.
europepmc +3 more sources
A novel numerical investigation of fiber Bragg gratings with dispersive reflectivity having polynomial law of nonlinearity [PDF]
Scientific ReportsFiber Bragg gratings represent a pivotal advancement in the field of photonics and optical fiber technology. The numerical modeling of fiber Bragg gratings is essential for understanding their optical behavior and optimizing their performance for ...
Hira Tariq +6 more
doaj +2 more sources
Twisted Fiber Bragg Gratings as a Polarization-Insensitive Element [PDF]
SensorsThis work proposes an original method for fabricating Bragg gratings using the point-by-point technique with femtosecond laser radiation, which minimizes the polarization dependence of the gratings’ optical response. The method is based on inscribing the
Oleg V. Butov +6 more
doaj +2 more sources
Application of Fiber Bragg Gratings as a Sensor of Pulsed Mechanical Action [PDF]
Sensors, 2022 The pulsed elongation of fiber Bragg gratings is considered in order to be used to measure the displacement or deformation rate of objects. Optimal measurement modes were determined, numerical simulation of the output signal was performed during pulsed ...
Dmitry Kiesewetter +7 more
doaj +2 more sources
Spectral and Microscopic Behavior of Type III Femtosecond Fiber Bragg Gratings at High Temperatures [PDF]
MicromachinesFiber Bragg gratings are key components for optical fiber sensing applications in harsh environments. Microvoids, or so-called type III fiber Bragg gratings, fabricated using femtosecond lasers and the point-by-point technique, were characterized at high
Matilde Sosa +4 more
doaj +2 more sources
Advances in Electrical and Electronic Engineering, 2015 In this paper, an analysis of the use of wavelength and time division multiplexing techniques for quasi-distributed measurement in uniform fiber Bragg gratings is presented.
Marcel Fajkus +6 more
doaj +2 more sources
Monitoring of Torque Induced Strain in Composite Shafts with Embedded and Surface-Mounted Optical Fiber Bragg Gratings [PDF]
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 +11 more
doaj +2 more sources