Chalcogens based glasses for IR fiber chemical sensors

Hocdé, Sandrine; Boussard‐Plédel, Catherine; Fonteneau, Gilles; Lucas, Jacques

doi:10.1016/s1293-2558(00)01135-3

Cited by 83 publications

(48 citation statements)

References 3 publications

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“…To manufacture infrared fibers, preforms of Te 2 As 3 Se s (TAS) glasses were prepared using a previously described fabrication process. 7 The main steps consist of purifying the starting elements, distilling the element mixture at high temperature, homogenizing the glass in a silica tube using a rocking furnace, and quenching the silica tube to obtain a rod. In order to eliminate the internal constraints due to quenching, the preform was annealed at a temperature close to the glass temperature (T g = 137°C).…”

Section: Experimental Methodsmentioning

confidence: 99%

Evaluation of Toxic Agent Effects on Lung Cells by Fiber Evanescent Wave Spectroscopy

et al. 2005

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Biochemical changes in living cells are detected using a fiber probe system composed of a single chalcogenide fiber acting as both the sensor and transmission line for infrared optical signals. The signal is collected via evanescent wave absorption along the tapered sensing zone of the fiber. We spectroscopically monitored the effects of the surfactant Triton X-lOO, which serves as a toxic agent simulant on a transformed human lung carcinoma type II epithelial cell line (A549). We observe spectral changes between 2800-3000 cm-1 in four absorptions bands, which are assigned to hydrocarbon vibrations of methylene and methyl groups in membrane lipids. Comparison of fiber and transmission spectra shows that the present technique allows one to locally probe the cell plasma membrane in the lipid spectral region. These optical responses are correlated with cellular metabolic activity measurements and LDH (lactate dehydrogenase) release assays that indicate a loss of cellular function and membrane integrity as would be expected in response to the membrane solubilizing Triton. The spectroscopic technique shows a significantly greater detection resolution in time and concentration.

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Section: Experimental Methodsmentioning

confidence: 99%

Evaluation of Toxic Agent Effects on Lung Cells by Fiber Evanescent Wave Spectroscopy

et al. 2005

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“…Previous studies using either unclad, or removed cladding, multimode chalcogenide fibres for FEWS sensing, with core diameters ranging from 100 to 400 m, have been reported extensively [1,3,8,9,[31][32][33][34]. It is also known that by tapering down a fibre with sub-wavelength features can also improve FEWS sensing since large proportion of light cannot be confined in to the fibre core which propagates along the fibre surface [18,19].…”

Section: Analysis Of Optical Modes In the Ge-te-se Fibrementioning

confidence: 99%

Engineering of a Ge–Te–Se glass fibre evanescent wave spectroscopic (FEWS) mid-IR chemical sensor for the analysis of food and pharmaceutical products

Jiang

Jha

2015

Sensors and Actuators B: Chemical

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Article:Jiang, X and Jha, A orcid.org/0000-0003-3150-5645 (2015) Engineering of a Ge-Te-Se glass fibre evanescent wave spectroscopic (FEWS) ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.

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“…These glass rods were drawn to mono index fibers (ø from 400 -550 μm), using a special fiber drawing machine [5]. Several meters of three TeGeGaI type mono-index fibers (two non-purified ø400 μm and one purified ø400 μm/ø520 μm) were drawn, showing a good surface quality, free of defects or crystallization (see Fig.…”

Section: Te Glass Development For the Long Wavelength Fibermentioning

confidence: 99%

Development of infrared single-mode fibers for 2 wavelength bands of the Darwin mission: test results of prototypes

Cheng

Dijkhuizen

Nieuwland

et al. 2009

Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III

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Various space telescope array systems are being considered to investigate other terrestrial planets orbiting around nearby stars in order to find extra-terrestrial life. One of them is the DARWIN mission of the European Space Agency (ESA). The required technology is the nulling interferometer. The challenge of nulling is making the null in the interferometric signal sufficiently deep to cancel the light from the bright star during the collection of light from its surrounding planets. The performance of the nulling is limited by the wavefront quality of the beams. The wavefront error can be reduced by filtering using a single mode fiber. For the DARWIN mission, the operational wavelength range is 6.5-20μm. Within the current ESA project, this is covered by a dual-band fiber system. A chalcogenide glass fiber based on the Te-As-Se (TAS) composition is selected to be used for the short wavelength band. For the long wavelength band up to 20 μm, Tellurium based glass is proposed. Different samples of various composition based on Te glass are manufactured and tested. The fibers are designed by TNO and different prototypes have been manufactured by the University of Rennes. Test setups are developed to demonstrate/investigate the single mode operation. Cladding modes are found to disturb the single mode operation. The effect of cladding modes is modeled. Solutions to eliminate the cladding modes are investigated and tested.

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Chalcogens based glasses for IR fiber chemical sensors

Cited by 83 publications

References 3 publications

Evaluation of Toxic Agent Effects on Lung Cells by Fiber Evanescent Wave Spectroscopy

Evaluation of Toxic Agent Effects on Lung Cells by Fiber Evanescent Wave Spectroscopy

Engineering of a Ge–Te–Se glass fibre evanescent wave spectroscopic (FEWS) mid-IR chemical sensor for the analysis of food and pharmaceutical products

Development of infrared single-mode fibers for 2 wavelength bands of the Darwin mission: test results of prototypes

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