Results 21 to 30 of about 3,659,347 (241)

Optical fiber sensing based on reflection laser spectroscopy [PDF]

open access: yes, 2010
An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and ...
De Natale, Paolo   +55 more
core   +1 more source

Toward the Development of Plasmonic Biosensors to Realize Point-of-Care Tests for the Detection of Viruses and Bacteria

open access: yesEngineering Proceedings, 2023
Optical fiber biosensors can be used to develop point-of-care tests (POCTs) for detecting viruses and bacteria in several matrices. In particular, the surface plasmon resonance (SPR) and localized SPR phenomena (LSPR) can be excited by exploiting low ...
Francesco Arcadio   +5 more
doaj   +1 more source

Quantitative sensitivity analysis of surface attached optical fiber strain sensor [PDF]

open access: yes, 2014
Optical fiber strain sensors, in particular, the fiber Bragg grating (FBG) type, are widely applied in different applications. The most common installation method is surface-attached.
Wan, KT
core   +1 more source

Fiber-Optic Nanosensors for Chemical Detection

open access: yesChemosensors, 2023
Recently, rapid progress has been achieved in the field of nanomaterial preparation and investigation. Many nanomaterials have been employed in optical chemical sensors and biosensors.
Vlastimil Matějec   +2 more
doaj   +1 more source

Thin bonding wires temperature measurement using optical fiber sensors [PDF]

open access: yes, 2011
In this work we demonstrate the use of optical fiber sensors to measure temperature in thin metallic bonding wires. Temperature was measured in copper wires with diameter of 0.10, 0.28, 0.60 and 0.70 mm and for different values of the driven electrical ...
P. Antunes   +14 more
core   +1 more source

Assessment of a Dual-Wavelength Compensation Technique for Displacement Sensors Using Plastic Optical Fibers [PDF]

open access: yes, 2012
The paper analyzes the performance of a dual-wavelength technique devised to compensate power fluctuations in intensity-modulated plastic optical fiber sensors, which were specifically conceived for the measurement of displacements in industrial and ...
Massimo Olivero   +7 more
core   +1 more source

Laser-frequency locking techniques for high-sensitivity strain measurements by high-birefringence fiber Bragg gratings and resonators [PDF]

open access: yes, 2007
A new approach to simultaneously interrogate orthogonal axes of single Fiber- Bragg-Gratings (FBGs) and FBG-FabryPerot resonator sensors fabricated in linearly highly birefringent (HiBi) fibre is presented.
Ferraro, P.   +20 more
core   +1 more source

Radio-frequency ring resonators for self-referencing fiber-optic intensity sensors [PDF]

open access: yes, 2005
A theoretical and experimental study of radiofrequency ring resonators (RR) for referencing and improving the sensitivity of fiber-optic intensity sensors (FOS) is reported.
Contreras Lallana, Pedro   +5 more
core   +1 more source

High-speed, solid state, interferometric interrogator and multiplexer for fiber Bragg grating sensors [PDF]

open access: yes, 2011
We report on the design and prototyping of a robust high-speed interferometric multiplexer and interrogator for fiber Bragg grating sensors. The scheme is based on the combination of active WDM channel switching and passive, instantaneous interferometry,
Niewczas, Pawel   +3 more
core   +3 more sources

Design and Application of a Fiber Bragg Grating Tension Sensor for Anchor Rope

open access: yesAdvances in Mechanical Engineering, 2013
A fiber Bragg grating (FBG) tension sensor for anchor rope has been proposed and implemented in the full-scale impact test of rockfall protection barriers in this paper.
Jun Huang   +5 more
doaj   +1 more source

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