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Tytuł:
Analysis of metrological properties fiber Bragg gratings with a constant and variable period
Analiza właściwości metrologicznych siatek Bragga ze stałym i zmiennym okresem
Autorzy:
Zieliński, T.
Kisała, P.
Powiązania:
https://bibliotekanauki.pl/articles/408901.pdf
Data publikacji:
2018
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
fiber Bragg grating (FBG)
optical sensor
uniform fiber Bragg grating
chirped fiber Bragg grating
światłowodowa siatka Bragga
czujnik optyczny
jednorodna światłowodowa siatka Bragga
chirpowa światłowodowa siatka Bragga
Opis:
The paper presents periodic structures in terms of metrological properties in the distinction for a fiber Bragg grating (FBG) with a constant and changeable period. The process of their formation and characteristics as well as applications in many areas have been described. On the basis of the literature, the results of research and measurements of measurable quantities such as temperature and stress made by periodic structures applied to the fiber of the optical fiber are presented. Analysis of the presented measurements allowed to mark the ranges and accuracy of measurements of individual applications.
W pracy przedstawiono struktury periodyczne pod kątem własności metrologicznych w rozróżnieniu na światłowodowe siatki Bragga (FBG – ang.: Fiber Bragg Grating) o stałym i zmiennym okresie. Opisano proces ich powstawania oraz cechy charakterystyczne jak i zastosowania w wielu dziedzinach. W oparciu o literaturę zaprezentowano wyniki badań i pomiarów takich wielkości mierzalnych jak temperatura i naprężenie dokonywanych strukturami periodycznymi naniesionymi na włókno światłowodu. Analiza zaprezentowanych pomiarów pozwoliła nakreślić zakresy oraz dokładności pomiarów poszczególnych aplikacji.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2018, 8, 2; 62-67
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameter comparison of fiber Bragg grating based optical wavelength discriminators
Autorzy:
Sikora, A.
Powiązania:
https://bibliotekanauki.pl/articles/114343.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
fiber Bragg grain
FBG
chirped fiber Bragg grating
strain measurement
Opis:
Fiber Bragg gratings (FBGs) are widely used as temperature and strain measurement systems and in telecommunications systems. In order to simplify detecting the wavelength change (which is the output signal from FBB), fiber Bragg grating based optical wavelength discriminators can be used. In this paper, discriminators with apodized, chirped FBG cooperating with the identical grating of a sensor are considered. The analysis includes: the processing range (assuming the nonlinearity characteristic is less than 1%), the processing equation and the range of strain measurement. On the basis of simulation tests, there is discussed the influence of the following parameters: chirp value (Subsection 3.1), length (Subsection 3.2) and constant refractive index change averaged over the grating period (Subsection 3.3) of selected FBGs on the discriminator characteristic.
Źródło:
Measurement Automation Monitoring; 2016, 62, 8; 265-267
2450-2855
Pojawia się w:
Measurement Automation Monitoring
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:
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:
Investigation of Performance for a Two Regions Superstructure Fiber Bragg Grating
Autorzy:
Khorsheed, Suha
Hemed, Ayser
Fdhala, Mayyada
Powiązania:
https://bibliotekanauki.pl/articles/1046553.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bragg wavelength
Fiber Bragg Grating
Mode Coupling Theory
Sensor
Superstructure
Opis:
A Superstructure Fiber Bragg Grating (SFBG) with a two grating regions has been studied experimentally and analytically. Both transmitted and reflected spectra for SFBG were investigated in a constant temperature (room temperature). Data that archived by Spectrometer & Detector was analyzed. In the same circumstances, a set of equations considered to simulate the experimental configuration. The SFBG spectrum characterized by important parameters: Bragg wavelength, bandwidth and efficiency. Bragg wavelength is very popular and has been used by the researchers to determine the physical quantities, it represent the reflected wavelength which satisfy Bragg condition. The behavior of these spectral parameters are presented and studied in this paper. The effect of grating region on the bandwidth and efficiency of SFBG was also studied. The SFBG has been found worked as a filter for the laser source wavelengths, which is used. Furthermore, this special FBG can be developed to optimize a sensor for temperature and pressure.
Źródło:
World Scientific News; 2019, 137; 42-57
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconstruction of Strains with a Non-smooth Distribution and Temperature Using Optical Fiber Bragg Grating
Autorzy:
Detka, Małgorzata
Kaczmarek, Cezary
Powiązania:
https://bibliotekanauki.pl/articles/2124758.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fiber Bragg grating
non-smooth strain distribution
reflection spectrum
Opis:
This paper presents a simulation study of the simultaneous reconstruction of the non-smooth strain distribution of an optical fiber Bragg grating and its temperature, which is based on the reflection spectrum of the reflected beam of the grating. The transition matrix method was used to model the reflection spectrum of the grating, and the nonlinear NelderMead optimization method was used to simultaneously reconstruct the strain distribution along the grating and its temperature. The results of simulations of simultaneous reconstruction of the strain profile and temperature indicate good accord with the strain profiles and temperature set. The reconstruction errors of the strain profiles are less than 1.2 percent and the temperature change errors are less than 0.2 percent, with a noise level of 5 percent.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 3; 535--540
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Fiber-Optic Sensors System, Based on Fiber Bragg Gratings
Autorzy:
Kalizhanova, Aliya
Kunelbayev, Murat
Wojcik, Waldemar
Kozbakova, Ainur
Aitkulov, Zhalau
Malikova, Feruza
Powiązania:
https://bibliotekanauki.pl/articles/2202138.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
fiber Bragg grating
sensor
deformation
temperature
modeling
MATLAB
Simulink
Opis:
An article herein considers the development of a fiber-optic sensor system, based on fiber Bragg gratings. Presently, fiber-optic sensors has become world-widely known amongst sensor technologies, used for monitoring engineering and construction structures. The work is linked with developing the system from fiber-optic sensors on the basis of fiber optic gratings, its characteristics, deformation behavior and temperature, acting at fiber Bragg grating by means of computer modeling. The research is focused at the analysis of characteristics and deformation and temperature behavior of fiber-optic Bragg sensor. Fiber-optic Bragg sensor with tilted grating is used for measuring deformation of the object, the strength of which is changed, dependent on the applied force, as well, for measuring and detecting any temperature deviations, influencing at fiber Bragg grating, which might bring to fire and accidents. In the research, simulation modeling there was made in the MATLAB (Simulink) software.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 98--106
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual-parameter sensing characteristics of a single fiber Bragg grating half-pasted by 1C-LV epoxy under different curing
Autorzy:
Li, Hong
Zhang, Haoyue
Song, Yanming
Meng, Fanyong
Zhu, Lianqing
Powiązania:
https://bibliotekanauki.pl/articles/2033955.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fiber Bragg grating
cross-sensitivity
double peaks
surface pasting
curing
Opis:
A novel technology for the simultaneous and independent measurement of dual parameters is proposed and experimented. By using a single fiber Bragg grating half-pasted by 1C-LV epoxy under different curing conditions, the sensor structure is designed such that the reflective single-peak spectrum splits into a twin-peak spectrum, which makes the FBG spectrum form a natural spectral peak splitting bias. A measurement limitation exists in the FBG sensor packaging at room temperature, which can be solved by the high-temperature cured packaging method. To verify the validity of the theory and methodology, the experimental system is used. In the range from –1000 to +1000 με and from 35 to 75°C, the Bragg wavelength change is relative linear to the strain and temperature. The temperature and strain variations can be independently and simultaneously measured using the split peak, and the deviations of the FBG sensor are ±1°C and ±5 με, respectively. This single FBG sensor can realize dual-parameter measurement, which is valuable for narrow-space health monitoring.
Źródło:
Optica Applicata; 2021, 51, 3; 391-406
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dispersion-compensating en/decoder for a time-spreading/wavelength-hopping optical code-division multiplexing (OCDM) system
Autorzy:
Zheng, J.
Wang, R.
Pu, T.
Lu, L.
Fang, T.
Su, Y.
Li, L.
Yang, Q.
Chen, X.
Powiązania:
https://bibliotekanauki.pl/articles/174365.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
optical code-division multiplexing (OCDM)
fiber Bragg grating (FBG)
dispersion
Opis:
A novel dispersion-compensating fiber Bragg grating (FBG)-based en/decoder is proposed to compensate both the out-band and in-band dispersion in a time-spreading/wavelength-hopping (TS/WH) optical code-division multiplexing (OCDM) system. The experimental realization of such en/decoders only needs a uniform-pitch phase mask and a sub-micrometer precision moving stage. Such an en/decoder pair with the ability of compensating the dispersion of transmission in 20-km single mode fiber (SMF) is simulated and experimentally fabricated. Both the simulation and experimental results show that the decoded pulse can be recovered without any distortion owing to the elimination of dispersion.
Źródło:
Optica Applicata; 2013, 43, 3; 485-495
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distributed strain reconstruction based on a fiber Bragg grating reflection spectrum
Autorzy:
Detka, M.
Kaczmarek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/220892.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fiber Bragg grating (FBG)
synthesis
distributed sensing
transfer matrix method
Opis:
In this paper, we present a synthesis of the parameters of the fiber Bragg grating (FBG) and the reconstruction of the distributed strain affecting the grating, performed by means of its reflection spectrum. For this purpose, we applied the transition matrix method and the Nelder-Mead nonlinear optimization method. Reconstruction results of the strain profile carried out on the basis of a simulated reflection spectrum as well as measured reflection spectrum of the FBG indicate good agreement with the original strain profile; the profile reconstruction errors are within the single digit percentage range. We can conclude that the Nelder-Mead optimization method combined with the transition matrix method can be used for distributed sensing problems.
Źródło:
Metrology and Measurement Systems; 2013, 20, 1; 53-64
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fiber Bragg grating-based high temperature sensor and its low cost interrogation system with enhanced resolution
Autorzy:
Mamidi, V R
Kamineni, S
Ravinuthala, L N S P
Madhuvarasu, S S
Thumu, V R
Pachava, V R
Putha, K
Powiązania:
https://bibliotekanauki.pl/articles/949414.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fiber Bragg grating (FBG)
long period grating
fiber optic temperature sensor
optical intensity modulation
Opis:
A fiber Brag grating-based high temperature sensor together with a low cost, high speed and compact size interrogation system using a long period grating was designed, developed and tested. The designed sensor measures the temperature from room temperature to 550 °C. The sensor head was configured by encapsulating an fiber Brag grating (type-I) of Bragg resonance wavelength at 1552.88 nm in a capillary tube made of copper. Long period grating with peak transmission loss at 1550 nm was employed to convert the wavelength information from fiber Brag grating into an intensity modulated signal. Temperature related optical intensity information was again converted into its equivalent electrical signal by using a photodiode. The achieved resolution of the sensor was found to be 0.5 °C.
Źródło:
Optica Applicata; 2014, 44, 2; 299-308
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Demarcation energy properties of regenerated fiber Bragg grating sensors in few-mode fibers
Autorzy:
Mohd Nazal, N. A.
Lai, M.-H.
Lim, K.-S.
Gunawardena, D. S.
Chong, W.-Y.
Yang, H.-Z.
Ahmad, H.
Powiązania:
https://bibliotekanauki.pl/articles/174756.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
regenerated fiber Bragg grating
thermal regeneration
thermal decay
few-mode fibers
Opis:
In this work, thermal regeneration of fiber Bragg gratings inscribed in single-mode fibers, two-mode step index fibers and four-mode step index fibers is performed, where the single-mode fibers are used as the reference in the analysis. Specifically, we investigate the behavior of the thermal decay, recovery and eventually the permanent erasure of the gratings in the temperature range from 25 to 1300°C. In the domain of demarcation energy, the thermal responses of the gratings can be normalized and they share similar characteristic curves despite the different temperature ramping rates used in the annealing treatment. It is found that the demarcation energy at the regeneration point and the attempt-to-escape frequency for each grating can be associated with the confinement factors of the fibers. The finding in this work has provided a new insight in the manufacture of regenerated fiber Bragg grating sensors by using few-mode fibers for multiparameter sensing in high temperature environments.
Źródło:
Optica Applicata; 2018, 48, 2; 263-271
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radio Photonic Systems for Measurement of Instantaneous Radio Frequency with Amplitude-phase Modulation of Optical Carrier
Autorzy:
Morozov, O. G.
Nasybullin, A. R.
Vedenkin, D. A.
Agliullin, T. A.
Powiązania:
https://bibliotekanauki.pl/articles/958054.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
amplitude-phase modulation
transformation
fiber Bragg grating (FBG)
instantaneous frequency
radio photonics
Opis:
In this article questions related to the development instantaneous radio frequency measurement system based on application in them original ways of the amplitude-phase modulation transformation of single-frequency optical carrier by a radio signal in symmetric two-frequency and measuring “frequency-amplitude” transformation in fiber Bragg grating with special profile are considered. Such systems have broad prospects for use in telecommunications, military systems and for environmental monitoring.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 2; 103-107
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method of detecting inhomogeneities and defects in materials using sensors based on the fiber Bragg optic structures
Metoda wykrywania niejednorodności i defektów w materiałach z wykorzystaniem czujników opartych na światłowodowych strukturach Bragga
Autorzy:
Zychowicz, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/408505.pdf
Data publikacji:
2019
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
defect detection
fiber Bragg grating
fiber sensor
analiza defektów
światłowodowa siatka Bragga
czujnik światłowodowy
Opis:
The article presents the possibilities of detecting defect in materials using the fiber Bragg gratings (FBG). Steel belts with a thickness of 1 mm were used for the tests: one standard and the others were damaged. The damage was in the form of incisions. The FBG was glued to the sample with epoxy glue along its entire length and elongation by outside force. Based on the transmission spectrum obtained on the Optical Spectrum Analyzer (OSA) the processing characteristics: the main minimum on the transmission characteristics, total width of the spectrum and the full width at half maximum FWHM depending on the FBG strain was determine.
W artykule przedstawiono możliwości wykrywania defektu w materiałach przy użyciu światłowodowych siatek Bragga (FBG). Do testów użyto kilka stalowych pasków: jeden wzorcowy, pozostałe uszkodzone w różny sposób. Uszkodzenia miały postać nacięć. FBG przyklejono do próbki klejem epoksydowym na całej długości i wydłużano. Widmo transmisji uzyskane na analizatorze widma wykorzystano do określenia charakterystyk przetwarzania: główne minimum charakterystyki transmisji całkowita szerokość widma i szerokość połówkowa FWHM w zależności od odkształcenia siatki.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2019, 9, 3; 62-65
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Execution Simulation Design of Fiber-to-the- home (FTTH) Device Ingress Networks Using GPON with FBG Based on OptiSystem
Autorzy:
Shabaneh, Arafat Abdallah
Melhem, Masa Loai
Powiązania:
https://bibliotekanauki.pl/articles/2200708.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fiber to the home
fiber Bragg grating
power link budget
Q-factor
gigabit passive optical networks
Opis:
Consumers require high-speed data transmission for different activities, such as smartphone usage, live broadcasting of news, and video conferencing. Therefore, a reliable communication network is needed to provide this kind of service to users. Fiber to the home (FTTH) is an optical fiber architecture that uses fiber cables in the access network for direct and final connection to homes or offices of customers. Networks based on FTTH can offer high performance, speed, and quality. An optical fiber communication system based on FTTH device ingress network using gigabit passive optical networks (GPONs) with fiber Bragg grating (FBG) and optical amplifier is designed and analyzed in this study. The developed design based on the FTTH device and FBG shows a low bit error rate (BER) for downstream and upstream configurations with an optical fiber length of 20 km. Downstream and upstream configurations achieve a Q-factor of 89.5 and 181.3, respectively. Achievable sensitivity of the developed system is −28 dBm, while the received signal based on OptiSystem is −25.59 dBm. FTTH with FBG will play a major role in the future and provide effective solutions for a wide variety of applications in network communication systems and data transmission rates.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 4; 783--791
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
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