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    Wyświetlanie 1-7 z 7
    Tytuł:
    Experimental determination of the characteristics of a transmission spectrum of tilted fiber Bragg gratings
    Autorzy:
    Tolegenova, Akmaral
    Kisała, Piotr A.
    Zhetpisbayeva, Ainur
    Mamyrbayev, Orken
    Medetov, Bekbolat
    Powiązania:
    https://bibliotekanauki.pl/articles/221509.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optical fiber
    phase mask method
    tilted fiber Bragg grating
    Opis:
    In this article, we study tilted fiber Bragg gratings (TFBGs) with tilt angles of 6°and 8°, their transmission spectra, and spectral parameters that have a linear dependence on the refractive index of the environment. It is shown that there can be several such characteristics, such as the minimum, width and energy of the spectrum. The linear dependence of the spectrum width on the refractive index does not depend on the tilt angle. The linear dependence of the spectrum minimum is only observed for a tilt angle of 8°. The results of this work can be used to create a sensor system based on an optical fiber.
    Źródło:
    Metrology and Measurement Systems; 2019, 26, 3; 581-589
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the inadequacy of determining the spectral characteristics of optical fibre periodic structures by way of numerical modelling
    Autorzy:
    Stępniak, Piotr
    Kisała, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/221086.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    numerical simulations
    fibre Bragg grating
    numerical modelling
    Opis:
    As part of the work, the error level of simulations of uniform optical-fibre Bragg gratings was determined using the transition matrix method. The errors were established by comparing the transmission characteristics of the structures obtained by simulation with the corresponding characteristics arrived at experimentally. To compile these objects, elementary properties of the characteristics were specified, also affecting the applications of Bragg gratings, and compared with each other. The level of error in determining each of these features was estimated. Relationships were also found between the size of the physical properties of Bragg gratings and the level of errors obtained. Based on the findings, the correctness of the simulation of structures with the said method was verified, giving satisfying results.
    Źródło:
    Metrology and Measurement Systems; 2020, 27, 1; 33-50
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical foundations determining spectral characteristics measured in Bragg gratings subjected to bending
    Autorzy:
    Kisała, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2173892.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optical fibers
    tilted fiber Bragg grating
    bending sensors
    Opis:
    The article presents an analysis of the impact of bending optical fibers with tilted Bragg gratings on their spectral parameters. This article proves that it is possible to a choose TFBG cladding mode and the optical spectrum range related to it that allows the best metrological properties to be obtained when measuring bend. The results contained in the paper explain why the minima in the spectral characteristics, corresponding only to some cladding modes, change their shape during TFBG bending, which is important for application of Bragg gratings as bending sensors. It has been presented that in the case of TFBG we are able to aggregate the knowledge obtained during experiment to the form of a physical model of the fiber bending sensor.
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 3; 573--584
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of cladding modes in SMF-28 fibers with TFBG structures
    Autorzy:
    Kisała, Piotr
    Kalizhanova, Aliya
    Kozbakova, Ainur
    Yeraliyeva, Bakhyt
    Powiązania:
    https://bibliotekanauki.pl/articles/27311752.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    optical fiber sensors
    tilted fiber Bragg gratings
    optical measurements
    Opis:
    This article proposes an unequivocal method of labeling and numbering the cladding modes propagating in single-mode optical waveguides with tilted periodic structures. The unambiguous determination of individual propagating modes in this type of optical fiber is crucial for their use in sensory systems. The selection of the appropriate spectral range and mode determines the sensitivity and measuring range of tilted fiber Bragg grating (TFBG) sensors. The measurement methods proposed by individual research teams using TFBGs as transducers are usually based on the selection of specific modes. Unification of the labeling of modes and their numbering enables comparison of the basic metrological parameters of individual measurement methods and reproduction and verification of the proposed sensors and methods in the laboratories of other scientific and research centers.
    Źródło:
    Metrology and Measurement Systems; 2023, 30, 3; 507--518
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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