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A Review of Optical Fibre Ethanol Sensors: Current State and Future Prospects [PDF]

open access: yesSensors, 2022
A range of optical fibre-based sensors for the measurement of ethanol, primarily in aqueous solution, have been developed and are reviewed here. The sensing approaches can be classified into four groups according to the measurement techniques used ...
Sanober Farheen Memon   +5 more
doaj   +3 more sources

Mn2+-activated dual-wavelength emitting materials toward wearable optical fibre temperature sensor [PDF]

open access: yesNature Communications, 2022
Dual-wavelength emission materials can provide fluorescence intensity ratio technology with self-calibration features; their fabrication however, remains a challenge.
Enhai Song   +9 more
doaj   +3 more sources

Recent Advances in Biomedical Photonic Sensors: A Focus on Optical-Fibre-Based Sensing [PDF]

open access: yesSensors, 2021
In this invited review, we provide an overview of the recent advances in biomedical photonic sensors within the last five years. This review is focused on works using optical-fibre technology, employing diverse optical fibres, sensing techniques, and ...
Mario Ochoa   +4 more
doaj   +3 more sources

Novel Corrugated Long Period Grating Surface Balloon-Shaped Heterocore-Structured Plastic Optical Fibre Sensor for Microalgal Bioethanol Production [PDF]

open access: yesSensors, 2023
A novel long period grating (LPG) inscribed balloon-shaped heterocore-structured plastic optical fibre (POF) sensor is described and experimentally demonstrated for real-time measurement of the ultra-low concentrations of ethanol in microalgal bioethanol
Sanober Farheen Memon   +5 more
doaj   +2 more sources

Optical fibre based real-time measurements during an LDR prostate brachytherapy implant simulation: using a 3D printed anthropomorphic phantom

open access: yesScientific Reports, 2021
An optical fibre sensor based on radioluminescence, using the scintillation material terbium doped gadolinium oxysulphide (Gd2O2S:Tb) is evaluated, using a 3D printed anthropomorphic phantom for applications in low dose-rate (LDR) prostate brachytherapy.
P. Woulfe   +6 more
doaj   +1 more source

Analysis and experiment on simultaneous measurement of strain and temperature by etched and un-etched FBG pair

open access: yesResults in Optics, 2021
This paper presents analysis and experiment on simultaneous measurement of strain and temperature using pair of etched and un-etched fiber Bragg grating (FBG) fabricated in a single mode glass optical fiber.
Jitendra Kumar   +6 more
doaj   +1 more source

High spatiotemporal resolution optoacoustic sensing with photothermally induced acoustic vibrations in optical fibres

open access: yesNature Communications, 2021
Optoacoustic sensing applications are limited by weak electrostrictive force. Here, the authors induce photothermally acoustic vibrations with a focused pulsed laser, and via scanning demonstrate sensing of acoustic impedance at 10 µm spatial resolution,
Yizhi Liang   +4 more
doaj   +1 more source

Ultra-low-loss anti-resonant hollow-core fiber with nested concentric circle structures

open access: yesResults in Physics, 2022
In this paper, a novel nested concentric circle anti-resonant hollow-core fiber with double-layer cladding structure and an outer cladding ring is proposed. By optimizing the structural parameter of the novel fiber, its confinement loss reaches 0.0001 dB/
Xingtao Zhao   +4 more
doaj   +1 more source

Fibre-Optic Vibration Probe [PDF]

open access: yesSPIE Proceedings, 1986
A practical all-fibre laser vibrometer is described. The design has been optimised for hand-held use and incorporates a frequency-scanned laser-diode and a single-mode optical-fibre coupler. The vibration information is extracted by a pseudo-heterodyne technique.
Laming, R.I.   +3 more
openaire   +4 more sources

Dosimetric Application of Phosphorus Doped Fibre for X-ray and Proton Therapy

open access: yesSensors, 2021
Phosphorous-doped silica optical fibres with a core diameter of 4 µm were tested in X-ray and proton fields for application in cancer therapy dosimetry.
Olugbenga J. Olusoji   +7 more
doaj   +1 more source

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