Results 21 to 30 of about 5,326 (282)

Numerical Analysis of Radiation Effects on Fiber Optic Sensors [PDF]

Sensors, 2021
Optical fiber sensors (OFS) are a potential candidate for monitoring physical parameters in nuclear environments. However, under an irradiation field the optical response of the OFS is modified via three primary mechanisms: (i) radiation-induced attenuation (RIA), (ii) radiation-induced emission (RIE), and (iii) radiation-induced compaction (RIC).
Sohel Rana, Harish Subbaraman, Austin Fleming, Nirmala Kandadai   +3 more
openaire   +3 more sources

MXene-Based Fiber-Optic Humidity Sensor for Fast Human Breath Monitoring [PDF]

Photonics
Breath is one of the most important physiological features of human life. In particular, it is significant to monitor the physical characteristics of breath, such as breath frequency and tidal volume. Breath sensors play an important role in the field of
Xiaokang Li, Binchuan Sun, Ting Xue, Kangwei Pan, Yuhui Su, Yajun Jiang, Bobo Du, Dexing Yang   +7 more
doaj   +2 more sources

Online optical refractive index measurement in research reactor core [PDF]

EPJ Web of Conferences, 2021
There is a growing interest in fiber optic measurements for applications in radiation environments. Optical fiber sensors and diagnostics can monitor many parameters of interest inside a research reactor core.
Fourneau Gary, Agoyan Marion, Chemol Guy, Ladaci Ayoub, Maskrot Hicham, Destouches Christophe, Fourmentel Damien, Girard Sylvain, Boukenter Aziz   +8 more
doaj   +1 more source

EXPERIMENTAL STUDY OF OPTICAL POWER EFFECT ON THE STRUCTURE OF FIBER-OPTICAL DIFFUSER OBTAINED BY FIBER CORE MELTING [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper presents experimental findings of a fiber-optic diffuser structure formed by optical fiber melting. Method. An optical scheme of ytterbium fiber laser is demonstrated consisting of such main components as: a laser pump ...
Ianina D. Tokareva, Yuri A. Konin, Kirill A. Konnov, Sergey V. Varzhel, Andrey A. Dmitriev, Sofya D. Bochkova   +5 more
doaj   +1 more source

Organic phosphor based fiber-optic sensor for detection of UV radiation [PDF]

Journal of Physics: Conference Series, 2021
Abstract The paper presents a simple and low-cost fiber-optic sensor for detection of UV radiation. A sensor construction consists of a silica capillary with a photoactive composition based on an organic phosphor, organic solvent and epoxyacrylate inside and a multimode optical fiber in contact with each other.
A S Matrosova, V A Ananyev, G A Pchelkin, D N Shurupov, S K Evstropiev, V M Volynkin, V V Demidov, N V Nikonorov   +7 more
openaire   +1 more source

UV Sensor Based on Fiber Bragg Grating Covered with Graphene Oxide Embedded in Composite Materials

Sensors, 2020
Polymer–matrix composites degrade under the influence of UV radiation in the range of the 290–400 nm band. The degradation of polymer–matrix composites exposed to UV radiation is characterized by extensive aging of the epoxy matrix, resulting in ...
Piotr Lesiak, Karolina Bednarska, Krzysztof Małkowski, Łukasz Kozłowski, Anna Wróblewska, Piotr Sobotka, Kamil Dydek, Anna Boczkowska, Tomasz Osuch, Alicja Anuszkiewicz, Wojciech Lewoczko-Adamczyk, Henning Schröder, Tomasz Ryszard Woliński   +12 more
doaj   +1 more source

Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]

, 2006
Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Flockhart, G M H, Cranch, G A, Kirkendall, C K   +2 more
core   +1 more source

Modified POF Sensor for Gaseous Hydrogen Fluoride Monitoring in the Presence of Ionizing Radiations [PDF]

, 2012
This paper describes the development of a sensor designed to detect low concentrations of hydrogen fluoride (HF) in gas mixtures. The sensor employs a plastic optical fiber (POF) covered with a thin layer of glass- like material. HF attacks the glass and
Piccolo D., S. Grassini, Colafranceschi, S., Piccolo, D., Colafranceschi S., S. Bianco, S. Corbellini, Benussi L., Bianco S., S. Colafranceschi, Bianco, S., Parvis, Marco, Benussi, L., D. Piccolo, Corbellini, Simone, L. Benussi, Grassini, Sabrina, M. Parvis   +17 more
core   +1 more source

Temperature-compensated fiber-optic gas flow speed sensor based on the 'Hot-wire' principle [PDF]

, 2021
Compared with the use of other types of sensors, there are significant advantages in making measurements of low speed gas flows by using a fiber-optic ‘hot-wire’ sensor.
Ning, Y., Grattan, K. T. V., Sun, T., Zhong, X., Dong, G., Li, Z., Zhao, L., Liu, Y., Wang, J., Hou, M., Liu, T.   +10 more
core   +1 more source

Ce doped SiO₂ optical fibers for remote radiation sensing and measurement [PDF]

, 2009
Scintillating materials, able to efficiently operate the conversion of energy absorbed in the form of ionizing radiation into light in the visible UV interval, are presently used in a wide class of applications as medical imaging, industrial inspection ...
Marco Brambilla, Marie Claire Cantone, Anna Vedda, Giampiero Tosi, Cannillo, Barbara, Cantone, Marie Cantone, Gilberto Brambilla, Eleonora Mones, M. Brambilla, G. Brambilla, Marco Petrovich, A. Vedda, B. Cannillo, Brambilla, Gilberto, Barbara Cannillo, Norberto Chiodini, Tosi, Gaimpiero, Vedda, Anna, I. Veronese, Fasoli, Mauro, Mauro Fasoli, Mones, Eleonora, E. Mones, M. Fasoli, A. Lauria, M. Petrovich, G. Tosi, Ivan Veronese, Lauria, Alessandro, Brambilla, Marco, Alessandro Lauria, M.C. Cantone, N. Chiodini, Petrovich, Marco, F. Moretti, Chiodini, Norberto, Moretti, Federico, Veronese, Ivan, Federico Moretti   +38 more
core   +1 more source