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    Wyświetlanie 1-9 z 9
    Tytuł:
    Comparison of Optical Fiber Inertial Vibration Sensors
    Autorzy:
    Poczesny, T.
    Prokopczuk, K.
    Domanski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418092.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Pa
    42.25.Bs
    42.79.Pw
    Opis:
    This paper presents the application and comparison of a macrobend seismic optical fiber accelerometer and ferrule-top cantilever fiber sensor (made by Optics11 - Amsterdam, Netherlands) both for long distance vibration monitoring. The sensors utilize typical telecommunication optical transmission systems with specially prepared sensing head. Both optical fiber sensors measure force and acceleration similar to the piezoelectric accelerometers. One of the advantages of these devices is insensitivity to electromagnetic interference because of lack of electrically driven elements in sensing head area. Experiments with wide ranges of frequencies and vibration amplitudes were performed. Main parameters and measurement capabilities of both sensor types were compared. Experimental results show usage possibility of both sensor types in industry and other explosion risk environments for vibration measurement and online monitoring.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 954-956
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polarization Mode Dispersion in Birefringent Optical Fibers
    Autorzy:
    Woliński, T. R.
    Domański, A. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035695.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Gs
    42.81.Pa
    42.25.Ja
    42.25.Dd
    Opis:
    The paper discusses influence of polarization mode dispersion on performance of polarimetric systems with highly birefringent fibers. It appeared that polarization mode dispersion strongly influences a degree of polarization that depends on coherence of the light source used and simultaneously diminishes dynamics of the output signal.
    Źródło:
    Acta Physica Polonica A; 2003, 103, 2-3; 211-219
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extrinsic Optical Fiber Sensor for Medical Audiometric Applications
    Autorzy:
    Prokopczuk, K.
    Poczęsny, T.
    Sobotka, P.
    Domański, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418093.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Pa
    42.79.Pw
    Opis:
    The paper presents optical fiber sensor designed for medical audiometric measurements. Currently, highly precise audiometric examinations require attachment of reflective element inside the ear. We propose alternative contactless optical and non-invasive method for audiometric applications. Presented sensor utilizes extrinsic intensity modulation combined with interferometric method to measure low amplitude vibrations with flat frequency response curve and no resonance effects. Experiment was performed with tympanic membrane model stimulated by external loudspeaker. Experimental results show usage possibility of presented sensor for laryngological and audiometric tests of ear membrane response, which is important for both diagnosis and implants sensitivity fitting for people with hearing deficits.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 957-961
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Longitudinal Strain Induced Birefringence in Highly Birefringent Fiber for Dynamic Compensation of Polarization Mode Dispersion
    Autorzy:
    Domański, A. W.
    Lesiak, P.
    Woliński, T. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035697.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Gs
    42.81.Pa
    42.25.Ja
    42.25.Dd
    Opis:
    The paper addresses a compensation method of polarization mode dispersion based on longitudinal strain applied to a highly birefringent fiber introduced as apart from optical fiber link. As an introduction a short overview of the polarization mode dispersion compensation methods known up-to-now is done. Dependence of polarization mode dispersion on longitudinal strain is discussed. Some results of experiment with birefringence changes due to longitudinal strain in the bow-tie highly birefringent fiber necessary for dynamic polarization mode dispersion are presented.
    Źródło:
    Acta Physica Polonica A; 2003, 103, 2-3; 221-227
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polarimetric Fiber Optic System for Static and Dynamic Strain Measurement
    Autorzy:
    Konopka, W.
    Woliński, T. R.
    Domański, A. W.
    Karpierz, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2023977.pdf
    Data publikacji:
    2001-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Gs
    42.81.Pa
    Opis:
    Polarization properties of the transmitted optical signal in polarimetric fiber-optic sensing systems for dynamic strain measurements as well as for smart structures applications are presented. The smart structure consists of highly birefringent fiber embedded in an epoxy cylinder.
    Źródło:
    Acta Physica Polonica A; 2001, 99, 1; 207-212
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polarimetric and Bragg Optical Fiber Sensors for Stress Distribution and Temperature Measurements in Composite Materials
    Autorzy:
    Lesiak, P.
    Szeląg, M.
    Mileńko, K.
    Woliński, T.
    Domański, A.
    Jędrzejewski, K.
    Boczkowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1493251.pdf
    Data publikacji:
    2011-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Gs
    42.81.Pa
    62.23.Pq
    Opis:
    Composite structures are made from two or more constituent materials with significantly different physical or chemical properties and they remain separate and distinct in a macroscopic level within the finished structure. This feature allows us for introducing an optical fiber sensors matrix into the composite material. These sensors can demonstrate stress distribution inside a tested material influenced by external tensions. Two types of the optical fiber sensors, placed into one fiber simultaneously, are used as s matrix structure. One of them is based on application of the Bragg grating structure written inside the core of the fiber. Longitudinal stress modifies changes parameters of the Bragg grating and in the same, spectral characteristics of the light transmitted through the fiber. The second one is based on application of highly birefringent fibers which under external stress introduce polarization changes in the output light. These sensors placed into one fiber give a possibility to the measure two external tensions separately.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 4; 698-701
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polarimetric Optical Fiber Sensors for Dynamic Strain Measurement in Composite Materials
    Autorzy:
    Domański, A.
    Bieda, M.
    Lesiak, P.
    Makowski, P.
    Szeląg, M.
    Poczęsny, T.
    Prokopczuk, K.
    Sobotka, P.
    Chychłowski, M.
    Sierakowski, M.
    Woliński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399338.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.79.Pw
    42.25.Bs
    42.81.Pa
    Opis:
    Polarimetric optical fiber sensors possess possibility of temperature compensation, dynamic and integral system of strain monitoring, as well as low cost of photo-detecting elements. In the paper we present results of the sensor analysis with different kinds of birefringent optical fibers leading to an optimal setup for dynamic strain monitoring in composite materials. A great attention is put on parameters of the light sources like coherence and width of spectrum and their influence on dynamics of the strain sensor.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 399-401
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Angular Orientation of the Embedded Highly Birefringent Fiber on PMD Changes under Axial Stress
    Autorzy:
    Budaszewski, D.
    Lesiak, P.
    Plaga, R.
    Rajan, G.
    Semenova, Y.
    Farrell, G.
    Boczkowska, A.
    Domański, A.
    Woliński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1493020.pdf
    Data publikacji:
    2011-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Gs
    42.81.Pa
    62.23.Pq
    Opis:
    In the paper we present results of the research on polarization mode dispersion changes inside the polarimetric optical fiber sensors based on highly birefringent optical fibers embedded into composite materials with different angular orientations of the optical axes. Based on measurements made for different types of highly birefringent optical fiber sensors we have shown that strain sensitivities after lamination process are different in comparison to the data obtained before lamination. Our results indicate that polarization mode dispersion in side-hole highly birefringent fibers under axial stress strongly depends on fiber orientation in the composite material suggesting that orientation of the polarization axes of the highly birefringent fiber can be responsible for behavior of the fiber inside the composite material.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 4; 575-578
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Bragg and Polarimetric Optical Fiber Sensors for Stress Monitoring in Composite Materials
    Autorzy:
    Domanski, A.
    Lesiak, P.
    Milenko, K.
    Budaszewski, D.
    Chychlowski, M.
    Ertman, S.
    Tefelska, M.
    Wolinski, T.
    Jedrzejewski, K.
    Lewandowski, L.
    Jasiewicz, W.
    Helsztynski, J.
    Boczkowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1795792.pdf
    Data publikacji:
    2009-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Gs
    42.81.Pa
    62.23.Pq
    Opis:
    Composite structures are made of two or more components with significantly different physical or chemical properties and they remain separate and distinct in a macroscopic level within the finished structure. This feature allows for introducing optical fiber sensors into the composite material. These sensors can demonstrate stress distribution inside tested material influenced by external tensions. Two types of the optical fiber sensors are used as the 3D structure. One of them is based on application of fiber Bragg grating inside the core of the fiber. Longitudinal stress changes parameters of the Bragg grating and simultaneously, spectral characteristics of the light transmitted through the fiber. The second one is based on application of highly birefringent fibers which, under external stress, introduce polarization changes of the output light.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 3; 294-297
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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