Results 31 to 40 of about 15,020 (231)

Using a Fiber Loop and Fiber Bragg Grating as a Fiber Optic Sensor to Simultaneously Measure Temperature and Displacement

open access: yesSensors, 2013
This study integrated a fiber loop manufactured by using commercial fiber (SMF-28, Corning) and a fiber Bragg grating (FBG) to form a fiber optic sensor that could simultaneously measure displacement and temperature.
Hsu-Chih Cheng   +3 more
doaj   +1 more source

Azobenzene-based gel coated fibre Bragg grating sensor for moisture measurement [PDF]

open access: yes, 2016
A fibre Bragg grating sensor is coated with a novel polymer gel in order to investigate its suitability for nondestructive measurement of moisture in materials that can potentially lose their integrity due to moisture ingress.
Moniruzzaman, Mohammed, Rock, John
core   +3 more sources

Optical Fiber Bragg Grating Temperature Sensor

open access: yesDiyala Journal of Engineering Sciences, 2014
In this work, uniform Fiber Bragg Grating (FBG) temperature sensor system were implemented and investigated due to measurement of the Bragg wavelength shift.
Marwan L. Yousf   +3 more
doaj   +1 more source

A New Type of Etched Fiber Grating Hydrophone

open access: yesPhotonics, 2022
We propose a new type of fiber hydrophone composed of an etched fiber Bragg grating and a special packaging structure for detecting acoustic waves in the low-frequency band under water.
Wen-Fung Liu   +4 more
doaj   +1 more source

Simultaneous Measurement for Strain and Temperature Using Fiber Bragg Gratings and Multimode Fibers [PDF]

open access: yes, 2008
An all-fiber sensor capable of simultaneous measurement of temperature and strain is newly presented. The sensing head is formed by a fiber Bragg grating combined with a section of multimode fiber that acts as a Mach-Zehnder interferometer for ...
Lit, John W.Y.   +3 more
core   +2 more sources

Optical fiber sensor for ultrasonic detection at high temperature

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Because of the stable material property of optical fiber up to 1000℃, fiber-optic Bragg grating (FBG) sensor is considered as one of possible ultrasonic sensors used at ultrahigh temperature.
Fengming YU, Yoji OKABE
doaj   +1 more source

Solid-state interferometric interrogator and multiplexer for high-speed dynamic and absolute FBG wavelength measurement [PDF]

open access: yes, 2013
We present a solid-state FBG array interrogator and multiplexer capable of determining absolute FBG wavelengths and of providing high-speed, high-resolution static and dynamic measurements.
Fusiek, Grzegorz   +3 more
core   +1 more source

Study of Optical Fiber Sensors for Cryogenic Temperature Measurements

open access: yesSensors, 2017
In this work, the performance of five different fiber optic sensors at cryogenic temperatures has been analyzed. A photonic crystal fiber Fabry-Pérot interferometer, two Sagnac interferometers, a commercial fiber Bragg grating (FBG), and a π-phase ...
Veronica De Miguel-Soto   +8 more
doaj   +1 more source

A novel application of Fiber Bragg Grating (FBG) sensors in MPGD [PDF]

open access: yesEPJ Web of Conferences, 2018
We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of Micro Pattern Gaseous Detector (MPGD), with particular attention to the realisation of the largest triple (Gas electron Multiplier) GEM chambers so far operated, the GE1/1 chambers of the CMS experiment at LHC.
Abbaneo, D.   +157 more
openaire   +6 more sources

Cladding-Mode Backward-Recoupling-Based Displacement Sensor Incorporating Fiber Up Taper and Bragg Grating

open access: yesIEEE Photonics Journal, 2013
A temperature-insensitive fiber-optic displacement sensing scheme by cascading the fiber up taper and Bragg grating is experimentally demonstrated.
Tao Qi   +6 more
doaj   +1 more source

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