Articles with "evanescent wave" as a keyword



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Optical fiber evanescent-wave sensing technology of hydrogen sulfide gas concentration in oil and gas fields

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Published in 2018 at "Optik"

DOI: 10.1016/j.ijleo.2017.11.130

Abstract: Abstract For the problems of light source fluctuation noises, zero drift and other problems of H 2 S gas concentration sensor in optic-fiber evanescent-wave absorption spectroscopy, double-light-path absorption system was designed to theoretically analyze the… read more here.

Keywords: fiber evanescent; gas concentration; gas; evanescent wave ... See more keywords
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Peculiarities of the mid-infrared evanescent wave spectroscopy based on multimode chalcogenide fibers

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Published in 2017 at "Journal of Non-crystalline Solids"

DOI: 10.1016/j.jnoncrysol.2017.08.027

Abstract: Abstract Output characteristics of the evanescent wave sensor have been studied in experiment by measurement of the transmittance of a chalcogenide fiber submerged into an aqueous solution of acetone in the range of wavelengths 5–9 μm.… read more here.

Keywords: chalcogenide; evanescent wave; peculiarities mid; mid infrared ... See more keywords

Enhancement in performance of an evanescent wave fiber optic sensor in the near-infrared region by graphene’s chemical potential

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Published in 2018 at "Photonics and Nanostructures - Fundamentals and Applications"

DOI: 10.1016/j.photonics.2018.06.012

Abstract: Abstract An intensity interrogation-based fiber optic evanescent wave sensor with graphene monolayer is simulated and analyzed in the near-infrared spectral region. Chalcogenide glasses are considered as fiber’s core and clad materials. Dispersion relations of normal… read more here.

Keywords: evanescent wave; near infrared; graphene chemical; fiber optic ... See more keywords

'Rough guide' evanescent wave optrode for colorimetric metalloporphyrine sensors.

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Published in 2017 at "Talanta"

DOI: 10.1016/j.talanta.2016.11.057

Abstract: When films of zinc 5-(4-carboxyphenyl),10,15,20-triphenyl porphyrin (ZnTPP) are exposed to waterborne amine in pH- neutral or alkaline media, both Q- band and Soret band respond with a change of absorbance due to the donation of… read more here.

Keywords: rough guide; evanescent wave; guide evanescent; band ... See more keywords

Graphene based chalcogenide fiber-optic evanescent wave sensor for detection of hemoglobin in human blood

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Published in 2018 at "Optical Fiber Technology"

DOI: 10.1016/j.yofte.2018.01.012

Abstract: Abstract Fiber optic evanescent wave sensor with graphene as an absorption-enhancing layer to measure hemoglobin concentration in human blood is proposed. Previous modal functions and experimental results describing the variation of optical constants of human… read more here.

Keywords: detection; evanescent wave; human blood; fiber ... See more keywords
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A prototype evanescent wave-coupled cavity ring-down spectrometer for probing real-time aggregation kinetics of gold and silver nanoparticles.

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Published in 2020 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.9b05521

Abstract: We report on the development of a simple, linear optical cavity-based system combining evanescent wave (EW) with high-sensitive cavity ring-down spectroscopy (CRDS) technique using a diode laser at 644 nm and a right-angled prism for… read more here.

Keywords: aggregation; kinetics gold; evanescent wave; cavity ... See more keywords

Nucleic acid functionalized fiber optic probes for sensing in evanescent wave: optimization and application

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Published in 2019 at "RSC Advances"

DOI: 10.1039/c8ra10125f

Abstract: Reliable DNA-functionalized optic probes for sensing in evanescent wave have been developed based a series of optimizations on the etching solution and immobilization chemistry. read more here.

Keywords: probes sensing; nucleic acid; evanescent wave; optic probes ... See more keywords

Characterization and differentiation of the adsorption behavior of crystal violet and methylene blue at the silica/water interface using near field evanescent wave.

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Published in 2018 at "Soft matter"

DOI: 10.1039/c8sm01385c

Abstract: Different molecular structures lead to different adsorption performances. In this work, the adsorption behavior of two organic dyes, namely, crystal violet (CV, triphenylmethane dye of symmetric structure) and methylene blue (MB, azo dye of linear… read more here.

Keywords: adsorption; water interface; evanescent wave; silica water ... See more keywords

Butt-joint regrowth method by MOCVD for integration of evanescent wave coupled photodetector and multi-quantum well semiconductor optical amplifier

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Published in 2022 at "Chinese Physics B"

DOI: 10.1088/1674-1056/ac272b

Abstract: We have realized integration of evanescent wave coupled photodetector (ECPD) and multi-quantum well (MQW) semiconductor optical amplifier (SOA) on MOCVD platform by investigating butt-joint regrowth method of thick InP/InGaAsP waveguides to deep etched SOA mesas.… read more here.

Keywords: evanescent wave; wave coupled; regrowth; method ... See more keywords

Efficient Evanescent-Wave Electro-Optic Tuning on Silicon Nitride-Polymer Hybrid Waveguide

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Published in 2025 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2024.3508879

Abstract: Silicon nitride (SN) is a CMOS-compatible and low-loss dielectric waveguide material, making it ideal for passive waveguides. However, it lacks the electro-optic (EO) effect required for active tuning. Electro-optic activation on SN is crucial for… read more here.

Keywords: hybrid waveguide; evanescent wave; electro optic; efficient evanescent ... See more keywords

A ZIF-8-Functionalized Evanescent Wave Coupled Optical Fiber Bragg Grating for CO2 Detection

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Published in 2025 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2025.3619039

Abstract: The detection of carbon dioxide (CO2) is important for environmental protection. This paper proposes a CO2 sensor based on ZIF-8 functionalized evanescent wave coupled fiber Bragg grating (FBG). The sensor is constructed by coupling a… read more here.

Keywords: detection; evanescent wave; zif functionalized; fiber ... See more keywords