Real-time bioprocess monitoring using a mid-infrared fibre-optic sensor
Sign Up to like & getrecommendations! Published in 2021 at "Biochemical Engineering Journal"
DOI: 10.1016/j.bej.2020.107889
Abstract: Abstract This work proposes a simple, easy-to-fabricate and cost-efficient sensor based on mid-infrared (MIR) spectroscopy for in-situ real-time bioprocess monitoring. A process involving the production of sophorolipid biosurfactants by way of fermentation was studied with… read more here.
Keywords: fibre optic; real time; time; spectroscopy ... See more keywords
Assessment of a steel model truss using distributed fibre optic strain sensing
Sign Up to like & getrecommendations! Published in 2018 at "Engineering Structures"
DOI: 10.1016/j.engstruct.2018.05.100
Abstract: Abstract Steel truss bridges are a critical part of the North American rail bridge inventory, with many being over a century old. Current assessment techniques are often based on visual inspections, which do not provide… read more here.
Keywords: fibre optic; optic strain; distributed fibre; truss ... See more keywords
Evaluating in-service structural behaviour of an operational railway bridge using fibre optic sensing and structural model updating
Sign Up to like & getrecommendations! Published in 2021 at "Engineering Structures"
DOI: 10.1016/j.engstruct.2021.113116
Abstract: Abstract Multi-girder prestressed concrete bridges are a very common structural form for bridges around the world. Their continued use is expected in the future given the advantages these structures have with respect to speed of… read more here.
Keywords: fibre optic; structural behaviour; behaviour operational; service structural ... See more keywords
Strain and displacement measurement based on distributed fibre optic sensing (DFOS) system integrated with FRP composite sandwich panel
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2021.109099
Abstract: Abstract An increase in application of advanced materials and high-tech monitoring systems is being observed in bridge engineering in recent years. The main goal is aimed at optimizing maintenance costs spent during entire lifecycle of… read more here.
Keywords: system; strain displacement; dfos system; distributed fibre ... See more keywords
3-D optical profilometry at micron scale with multi-frequency fringe projection using modified fibre optic Lloyd’s mirror technique
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2017.12.012
Abstract: Abstract A new fibre optic Lloyd’s mirror method is developed for extracting 3-D height distribution of various objects at the micron scale with a resolution of 4 µm. The fibre optic assembly is elegantly integrated to… read more here.
Keywords: fibre optic; frequency; lloyd mirror; micron scale ... See more keywords
Simple and robust ternary pulse-encoding and reconstruction of narrowband RF signals over low-cost fibre-optic links
Sign Up to like & getrecommendations! Published in 2017 at "Iet Optoelectronics"
DOI: 10.1049/iet-opt.2017.0031
Abstract: An existing ternary pulse-coding scheme for bandpass signals, whereby a timing code specifies positive and negative rectangular pulses as well as a third zero state formed by skipping pulses, is adapted to transmission and reconstruction… read more here.
Keywords: narrowband signals; fibre optic; ternary pulse; reconstruction narrowband ... See more keywords
Nonlinear distortions as nonlinear noise in coherent fibre-optic communication lines
Sign Up to like & getrecommendations! Published in 2017 at "Quantum Electronics"
DOI: 10.1070/qel16559
Abstract: A phenomenological model describing nonlinear distortions in coherent fibre-optic communication lines is investigated. This model makes it possible to extend the range of application of the nonlinear noise model as compared with the well-known GN… read more here.
Keywords: fibre optic; communication lines; nonlinear distortions; coherent fibre ... See more keywords
Acousto-optic modulators for fibre-optic lines
Sign Up to like & getrecommendations! Published in 2020 at "Quantum Electronics"
DOI: 10.1070/qel17378
Abstract: The specific features of efficient matching of acoustooptic devices with single-mode fibres for the cases of isotropic and anisotropic diffraction are considered. The acousto-optic interaction geometry, optimal for modulating an arbitrarily polarised light beam with… read more here.
Keywords: optic lines; optic modulators; modulators fibre; acousto optic ... See more keywords
Self-calibration and compensation of residual gyro drifts for rotation inertial navigation system with fibre optic gyro
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2018.1514472
Abstract: ABSTRACT Fibre optic gyros (FOGs) are widely used in the rotation inertial navigation system (RINS). However, FOGs are sensitive to surrounding environments, and thus the drifts of FOGs would vary during the rotation of the… read more here.
Keywords: fibre optic; inertial navigation; gyro; rotation inertial ... See more keywords
Out-of-Band Fibre-Optic Time and Frequency Transfer Using Asymmetric and Symmetric Opto-Electronic Repeaters.
Sign Up to like & getrecommendations! Published in 2023 at "IEEE transactions on ultrasonics, ferroelectrics, and frequency control"
DOI: 10.1109/tuffc.2023.3271371
Abstract: Signal repeaters for fibre-optic communication can be realized with back-to-back connected transceivers. This configuration can provide high gain (≈30 dB) at low cost, and the needed semiconductor lasers and modulators can be realized for practically… read more here.
Keywords: time frequency; time; frequency; fibre optic ... See more keywords
Vertical seismic profiling using distributed acoustic sensing with scatter‐enhanced fibre‐optic cable at the Cu–Au New Afton porphyry deposit, British Columbia, Canada
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Prospecting"
DOI: 10.1111/1365-2478.12828
Abstract: ABSTRACT Wireline logs and vertical seismic profile data were acquired in two boreholes intersecting the main mineralized zone at the Cu–Au New Afton porphyry deposit, Canada, with the objectives of imaging lithological contacts, fault zones… read more here.
Keywords: fibre optic; new afton; optic cable; vertical seismic ... See more keywords