Results 61 to 70 of about 10,558 (240)
Interrogation of fibre Bragg gratings through a fibre optic rotary joint on a geotechnical centrifuge [PDF]
, 2016 The monitoring of an array of fibre Bragg gratings (FBGs) strain sensors was performed through a single channel, single mode fibre optic rotary joint (FORJ) mounted on a geotechnical centrifuge.
Correia, Ricardo N. +4 more
core +1 more source
Non‐Continuous Iridescent Variable Structural Color Based on Metallic Surface Periodic Structures
Advanced Materials Interfaces, EarlyView.This study presents an ink‐free laser nanofabrication technique that generates periodic arched microstructures on titanium surfaces, achieving non‐continuous iridescent dual‐color switching. The ridge and side flanks of these structures possess distinct oxide film thicknesses, enabling angle‐dependent selective reflection of specific wavelengths.
XiangWei Liu +3 more
wiley +1 more source
Growth Characteristics of Fiber Bragg Gratings Fabricated in High Germania Boron Co-Doped Fiber
International Islamic University Malaysia Engineering Journal, 2012 This paper reports and provides an explanation for the growth characteristics of fibre Bragg gratings (FBGs) fabricated in high germania boron co-doped optical fiber by using a continuous wave (CW) doubled frequency Argon ion laser as an UV light source.
S. W. Harun , P. Poopalan and H. Ahmad
doaj +1 more source
The use of fibre Bragg gratings for ultrasonic Lamb wave detection and source location [PDF]
, 2006 There is an increasing interest in the use of ultrasonic Lamb waves for materials characterisation and the detection of structural defects. Fibre Bragg gratings offer some significant advantages over more traditional transducers such as piezoelectrics ...
Thursby, G.J.
core +1 more source
Effects of high temperature and pressure on silica optical fibre sensors
, 1998 We report on the effects of liquids at high temperature and pressure on silica optical fibres, sensors and gratings. We propose that the diffusion of molecules into the silica and the resultant expansion of the network are responsible for observed fibre ...
Clowes, J.R. +3 more
core +1 more source
Q-switching of an erbium-doped fibre laser modulated by a Bragg grating fixed to a piezoelectric [PDF]
, 2003 The performance of the Q-switched erbium-doped fibre laser with two fibre Bragg gratings as cavity mirrors was theoretically analysed, employing a set of rate equations for the ion populations and the photon flux inside the cavity.
Andrés, Miguel V. +3 more
core +2 more sources
Polymer optical fibre Bragg gratings based fibre laser
Optics Communications, 2006 Abstract For the first time the fibre laser constructed from a polymer optical fibre Bragg grating is reported. The single frequency laser with the peak power of −5 dBm and signal to noise ratio greater than 45 dB has been achieved. Further examination demonstrates the excellent characteristics of the fibre laser. First, the fibre laser can be easily
Liu, Hongbo +3 more
openaire +2 more sources
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
Fatigue Performance of Type I Fibre Bragg Grating Strain Sensors
Sensors, 2019 Although fibre Bragg gratings (FBGs) offer obvious potential for use in high-density, high-strain sensing applications, the adoption of this technology in the historically conservative aerospace industry has been slow.
Naizhong Zhang +4 more
doaj +1 more source
The viscosity of silica fibres
, 2013 The viscosity of an optical fibre over 1000 to 1150 {\deg}C is studied by inscribing an optical fibre Bragg grating that can withstand temperatures up to 1200 {\deg}C and monitoring fibre elongation under load through the Bragg wavelength shift.
Canning, John +4 more
core +1 more source