Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]
, 2006 Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Cranch, G A +2 more
core +1 more source
Compact Anemometer Using Silver-Coated Fiber Bragg Grating
IEEE Photonics Journal, 2012 An optical fiber thermal anemometer is proposed based on a silver film-coated fiber Bragg grating (FBG) assisted by a core offset fusion splice. Light from a pump laser propagating along the fiber is coupled into the fiber cladding by the splice and ...
Xinyong Dong +4 more
doaj +1 more source
Rapid characterization of the ultraviolet induced fiber Bragg grating complex coupling coefficient as a function of irradiance and exposure time [PDF]
, 2007 We report the application of optical frequency domain reflectometry and a discrete-layer-peeling inverse scattering algorithm to the spatial characterization of the UV induced complex coupling coefficient during fiber Bragg grating growth.
Cranch, Geoffrey A. +2 more
core +1 more source
Efficient large-scale multiplexing of fiber Bragg grating and fiber Fabry-Perot sensors for structural health monitoring applications [PDF]
, 2006 Fiber Bragg gratings have been demonstrated as a versatile sensor for structural health monitoring. We present an efficient and cost effective multiplexing method for fiber Bragg grating and fiber Fabry-Perot sensors based on a broadband mode-locked ...
Cranch, Geoffrey A. +2 more
core +1 more source
Gas-Flow Sensor using Optical Fiber Bragg Grating(FBG)
Journal of Navigation and Port Research, 2008 We have proposed and demonstrated an gas-flow sensor using optical fiber bragg grating(FEG). The flow sensor has no electronics and no mechanical parts in its sensing part and the structure is th11s simple and immune to electromagnetic interference(EMI). The FEG sensor was consisted qf the sensing element and a coil heater.
Joon-Hwan Shim +3 more
openaire +2 more sources
Strain Sensitivity Control of an In-Series Silica and Polymer FBG
Sensors, 2018 This work reports on the use of an in-series silica and polymer fiber Bragg grating (FBG) to control the FBG strain sensitivities and enhance in the case of the polymer fiber Bragg grating (PFBG).
Ricardo Oliveira +2 more
doaj +1 more source
Encapsulation of FBG sensor into the PDMS and its effect on spectral and temperature characteristics [PDF]
, 2016 Fiber Bragg Grating (FBG) is the most distributed type of fiber-optic sensors. FBGs are primarily sensitive to the effects of temperature and deformation. By employing different transformation techniques, it is possible to use FBG to monitor any physical
Bednárek, Lukáš +5 more
core +2 more sources
High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology
Micromachines, 2022 We experimentally studied the inscription of fiber Bragg gratings by using femtosecond (fs) laser point-by-point (PbP) technology. The effects of the focusing geometry, grating order, laser energy and grating length on the spectral characteristics of the
Runxiao Chen +5 more
doaj +1 more source
Sensors, 2015 An optical fiber current sensor based on Fabry-Perot interferometer using a fiber Bragg grating demodulation is proposed. Magnetic fluid is used as a sensitive medium in fiber optical Fabry-Perot (F-P) cavity for the optical characteristic of magnetic ...
Ji Xia, Qi Wang, Xu Liu, Hong Luo
doaj +1 more source
Low weight additive manufacturing FBG accelerometer: design, characterization and testing [PDF]
, 2018 Structural Health Monitoring is considered the process of damage detection and structural characterization by any type of on-board sensors. Fibre Bragg Gratings (FBG) are increasing their popularity due to their many advantages like easy multiplexing ...
Galvín, Pedro +2 more
core +1 more source