Results 31 to 40 of about 30,180 (277)

Experimental study on the transition process from partial discharge to arc discharge of oil–paper insulation based on fibre‐optic sensors

open access: yesIET Generation, Transmission & Distribution, 2023
Arc discharge in the power transformer can bring enormous economic losses and safety risks. The transformer protection system for arc discharge faults is still not ideal.
Zhixian Zhang   +9 more
doaj   +1 more source

Forty-Four Pass Fibre Optic Loop for Improving the Sensitivity of Surface Plasmon Resonance Sensors

open access: yes, 2007
A forty-four pass fibre optic surface plasmon resonance sensor that enhances detection sensitivity according to the number of passes is demonstrated for the first time. The technique employs a fibre optic recirculation loop that passes the detection spot
Becker P C   +9 more
core   +1 more source

Quadratic behavior of fiber Bragg grating temperature coefficients [PDF]

open access: yes, 2004
We describe the characterization of the temperature and strain responses of fiber Bragg grating sensors by use of an interferometric interrogation technique to provide an absolute measurement of the grating wavelength. The fiber Bragg grating temperature
Brady   +18 more
core   +1 more source

FBG_SiMul V1.0: Fibre Bragg grating signal simulation tool for finite element method models

open access: yesSoftwareX, 2016
FBG_SiMul V1.0 is a tool to study and design the implementation of fibre Bragg grating (FBG) sensors solutions in any arbitrary loaded structure or application.
G. Pereira, M. McGugan, L.P. Mikkelsen
doaj   +1 more source

Optical Fibre-Based Sensors for Oil and Gas Applications

open access: yesSensors, 2021
Oil and gas (O&G) explorations moving into deeper zones for enhanced oil and gas recovery are causing serious safety concerns across the world. The sensing of critical multiple parameters like high pressure, high temperature (HPHT), chemicals, etc., are ...
Jincy Johny   +2 more
doaj   +1 more source

Fibre segment interferometry using code-division multiplexed optical signal processing for strain sensing applications [PDF]

open access: yes, 2013
A novel optical signal processing scheme for multiplexing fibre segment interferometers is proposed. The continuous-wave, homodyne technique combines code-division multiplexing with single-sideband modulation.
Charrett, Thomas O. H.   +2 more
core   +1 more source

An illustrated guide to: Distributed and integrated fibre-optic sensing in seismology

open access: yesEarthquake Science
The properties of laser signals are affected by deformation of the optical fibre through which they are transmitted. While this deformation dependence is undesirable in telecommunication, it can be exploited for the construction of novel seismic sensors ...
Andreas Fichtner   +8 more
doaj   +1 more source

Integrated Fibre Optic Subsea System

open access: yesMeasurement + Control, 2009
StatoilHydro, Weatherford, FMC Technologies and Nexans Norway are cooperating in a project called Integrated Fibre Optic Subsea System (IFOSS), where multiple aspects of utilizing optical fibre subsea for enhancing bandwidth and reach are addressed, when
Kjetil Johannessen   +2 more
doaj   +1 more source

Fluorescent optical fibre chemosensor for the detection of mercury [PDF]

open access: yes, 2016
This work aims to develop a stable, compact and portable fibre optic sensing system which is capable of real time detection of the mercury ion (II), Hg2+.
Grattan, K. T. V.   +3 more
core   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

open access: yesMolecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken   +3 more
wiley   +1 more source

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