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Tytuł:
A polarization filter at 1550 nm based on photonic crystal fiber with symmetry around gold-coated holes
Autorzy:
Zha, F.
Li, J.
Sun, P.
Wang, X.
Powiązania:
https://bibliotekanauki.pl/articles/173897.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
photonic crystal fiber
polarization filter
finite element method
surface plasmon resonance
Opis:
A polarization photonic crystal fiber based on surface plasmon resonance is proposed in this paper. The photonic crystal fiber with gold coated holes is studied through using the finite element method. The impacts of structural parameters on the resonance characteristics are discussed. Numerical simulations show that the resonance wavelength can be modulated by changing the parameters of the air holes and thickness of gold layer. At the resonance wavelength 1550 nm, the loss is 3.8045 dB/m in x-polarization and the loss is 28464 dB/m in y-polarization by adjusting the size of the gold-coated holes and the place of air holes. Results show that the loss of y-polarized mode is much larger than the loss of x-polarized mode. The y-polarized mode is suppressed, and only x-polarized mode can be guided at the resonance wavelength of y-polarized mode. The results indicate that the mode polarized in one direction can be filtered out selectively by adjusting the diameter of air holes, and the filtering effect in a communication band is achieved.
Źródło:
Optica Applicata; 2018, 48, 4; 609-620
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of optical fiber technology in Poland
Autorzy:
Wójcik, W.
Romaniuk, R. S.
Powiązania:
https://bibliotekanauki.pl/articles/227013.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optical fiber technology
manufacturing/fabrication of optical fibers
photonics
optoelectronics
photonic optical fibers
microstructured optical fibres
polymer optical fibers
optical polymers
silica glass
optical fiber glass
Opis:
Optical fiber technology is an important branch of science and technology, but also economy. Together with related disciplines it creates wider areas like optoelectronics and photonics. Optical fiber technology is developed in this country rather dynamically, proportionally to the available funds designed locally for research and applications. Recently this development was enhanced with considerable funds from European Operational Funds Innovative Economy POIG and Human Capital POKL. The paper summarizes the development of optical fiber technology in Poland from academic perspective during the period of last 2-3 years. Probably the digest is not very not full. An emphasis is put on development of optical fiber manufacturing methods. This development was illustrated by a few examples of optical fiber applications.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 1; 99-104
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-parameter measurement under fiber bending based on directional resonance coupling in photonic crystal fibers
Autorzy:
Tan, C.
Wang, Q.
Ding, Y.
Li, H.-W.
Wang, M.
Liu, H.
Powiązania:
https://bibliotekanauki.pl/articles/174320.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fiber bending
multi-parameter measurement
photonic crystal fiber
fiber sensing
Opis:
A multi-parameter sensor with enhanced sensitivity based on magnetic fluids infiltrated photonic crystal fiber is proposed. The sensing performances are investigated using the mode coupling theory and finite element method. Four symmetrical defective channels are assembled into the photonic crystal fiber to produce two resonant transmission dips λCV and λCH in vertical and horizontal directions, respectively. Each dip can be split into two relatively shallow dips (λCV1, λCV2 or λCH1, λCH2) when the photonic crystal fiber is bent. Interestingly, the values of (λCH2 – λCH1) and (λCV2 – λCV1) are associated with corresponding bend-curvature but almost unaffected by external temperature or magnetic field. On the contrary, the values of (λCH2 + λCH1)/2 and (λCV2 + λCV1)/2 are sensitive to temperature or magnetic field regardless of the bending condition. Based on above characteristics and the dependence of the magnetic fluids refractive index on temperature and magnetic field, the proposed sensor can measure not only the bend-curvature and bend-direction, but also the temperature and magnetic field.
Źródło:
Optica Applicata; 2018, 48, 3; 449-462
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Światłowody fotoniczne
Photonic Crystal Fibres
Autorzy:
Szuster, T.
Powiązania:
https://bibliotekanauki.pl/articles/407920.pdf
Data publikacji:
2012
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
światłowód fotoniczny
fotoniczna przerwa wzbroniona
kontrola dyspersji
zjawiska nieliniowe
lasery włóknowe
photonic crystal fibers
photonic band-gap
control of chromatic dispersion
nonlinear optics
fiber lasers
Opis:
W artykule przedstawione są światlowody fotoniczne. Pierwszym zagadnieniem jest budowa fotonicznych włókien oraz mechanizmy propagacji fali świetlnej. W dalszej części artykułu przedstawione są możliwości w dziedzinie włókien dwójłomnych. Następnie poruszony jest aspekt kontroli dyspersji chromatycznej, optyki nieliniowej i laserów dużej mocy. Artykuł zamyka rozdział o włóknach z powietrznym rdzeniem.
The article is about photonic crystal fibers. First are mentioned building ofphotonic crystal fibers and ways of light wave guiding. In the next part of article are presented abilities in birefringent optical fibers. Later are described control of chromatic dispersion, nonlinear optics and high power lasers. The last section of article is about hollow core photonic crystal fibers.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2012, 2; 12-14
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fotonika w systemach teleinformatycznych nowych generacji
Photonics for new generation of data transmission systems
Autorzy:
Szczepański, P.
Powiązania:
https://bibliotekanauki.pl/articles/317400.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
fotonika
kryształy fotoniczne
krzemowe podzespoły
photonics
photonic crystal fiber
silicon components
Opis:
Omówiono wybrane aspekty związane z rozwojem badań nad przyrządami i zintegrowanymi systemami fotonicznymi, przeznaczonymi w szczególności do współpracy z przezroczystymi sieciami optycznymi nowych generacji, transmisją i przetwarzaniem danych.
The paper presents selected areas of research on devices and integrated photonic systems, in particular those intended for use in new generation transparent optical networks, data transmission and processing.
Źródło:
Telekomunikacja i Techniki Informacyjne; 2009, 3-4; 127-141
1640-1549
1899-8933
Pojawia się w:
Telekomunikacja i Techniki Informacyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low-loss connection of hybrid fibre optic systems with low sensitivity to wavelength
Autorzy:
Skorupski, K.
Powiązania:
https://bibliotekanauki.pl/articles/220977.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
photonic-crystal fiber
measurement of mode-field diameter
fiber characterization
beam combining
Opis:
This paper proposes a method for adjusting light waves propagating in systems composed of photonic fibers, light sources and detection elements. The paper presents the properties of these connections in terms of the loss of signal transmission. Different fiber core areas were analyzed, and measurements of the mode-field diameters (MFDs) of selected fiber structures are presented. The study analyzed two types of LMA (Large Mode Area) fiber structures, and the mode-field diameters of these structures were measured on the basis of the radiation distribution obtained under near-field conditions. The results are compared to the values obtained for a SMF-28 single-mode fiber. The LMA structures analyzed in the paper are characterized by low sensitivity of the MFD parameter to the length of transmitted waves, which creates the possibility of their use as intermediate fibers when connecting optical fibers of different diameters. In the wavelength range from 800 nm to 1600 nm, a 3.5% MFD change was observed for the first investigated LMA structure, and a 1% change was observed for the second. In addition, measurements of the mode-field diameters were also made using the transverse offset method for comparison of the results.
Źródło:
Metrology and Measurement Systems; 2013, 20, 4; 697-704
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controllable wavelength conversion based on soliton dynamics in mid-infrared fiber
Autorzy:
Shen, Kangle
Yang, Jian
Zhao, Jiayi
Yang, Xinyu
Yang, Hua
Powiązania:
https://bibliotekanauki.pl/articles/27310109.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
soliton dynamics
photonic crystal fiber
all-optical conversion switches
Opis:
We provide a convenient way to actively control the wavelength conversion of probe waves based on the soliton dynamics in the As2S3 fibers. In this paper, it is found by numerical calculation that wavelength conversion occurs in the frequency domain due to the existence of refractive index barrier. By adjusting the collision position of pump pulse and probe pulse to realize the conversion of probe pulse wavelength, the effect of the power and the incident wavelength of the probe wave on the wavelength conversion are also discussed. This frequency domain conversion is of great use in the mid-infrared region, for example, all-optical conversion switches.
Źródło:
Optica Applicata; 2023, 53, 3; 419--429
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical Fiber Technology 2012
Autorzy:
Romaniuk, R. S.
Wójcik, W.
Powiązania:
https://bibliotekanauki.pl/articles/226186.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lightguide
optical fiber
photonics
optical fiber photonics
optoelectronics
optical fiber technology
optical fiber glasses and polymers
active optical fibers
photonic optical fibers
microstructured optical fibres
microoptics
photonic materials and metamaterials
fiber lasers
Opis:
The Conference on Optical Fibers and Their Applications, Nałęczów 2012, in its 14th edition, which has been organized since more than 35 years, has summarized the achievements of the local optical fiber technology community, for the last year and a half. The conference specializes in developments of optical fiber technology, glass and polymer, classical and microstructured, passive and active. The event gathered around 100 participants. There were shown 60 presentations of 20 research and application groups active in fiber photonics, originating from academia and industry. Topical tracks of the Conference were: photonic materials, planar waveguides, passive and active optical fibers, propagation theory in nonstandard optical fibers, and new constructions of optical fibers. A panel discussion concerned teaching in fiber photonics. The conference was accompanied by a school on Optical Fiber Technology. The paper summarizes the chosen main topical tracks of the conference on Optical Fibers and Their Applications, Nałęczów 2012. The papers from the conference presentations will be published in Proc. SPIE, including a conference version of this paper. The next conference of this series is scheduled for January 2014 in Białowieża.
Źródło:
International Journal of Electronics and Telecommunications; 2013, 59, 2; 131-140
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soft glass spiral photonic crystal fiber for large nonlinearity and high birefringence
Autorzy:
Revathi, S
Inabathini, S
Sandeep, R
Powiązania:
https://bibliotekanauki.pl/articles/173607.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
birefringence
dispersion
finite element method (FEM)
spiral photonic crystal fiber (SPCF)
Opis:
This paper presents a soft glass spiral photonic crystal fiber with circular air holes for achieving high birefringence, large nonlinearity and large negative dispersion. The material used here for designing the fiber is soft glass (SF-57). A central defect air hole is being introduced in the core for achieving high birefringence and for different ellipticity ratios the effect of various optical properties of a photonic crystal fiber are studied. The structure proposed has a high birefringence in the order of 10–2, high nonlinearity of 5828 W–1km–1 and high negative dispersion of –1546.6 ps/nm•km at 0.850 μm. A numerical approach based on the finite element method is used for the design and simulation of the structure. Due to the optimization in the cladding air holes, the fiber can be used as polarization maintaining fibers, in dispersion compensation and other nonlinear applications.
Źródło:
Optica Applicata; 2015, 45, 1; 15-24
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stack and draw fabrication of soft glass microstructured fiber optics
Autorzy:
Pysz, D.
Kujawa, I.
Stępień, R.
Klimczak, M.
Filipkowski, A.
Franczyk, M.
Kociszewski, L.
Buźniak, J.
Haraśny, K.
Buczyński, R.
Powiązania:
https://bibliotekanauki.pl/articles/201960.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
miękkie szkło
włókno fotoniczne
kryształ
włókno mikrostrukturyzowane
optyka nieliniowa
soft glass
stack and draw
image guide
photonic crystal fiber
microstructured fiber
nonlinear optics
Opis:
A broad review is given of microstructured fiber optics components - light guides, image guides, multicapillary arrays, and photonic crystal fibers - fabricated using the stack-and-draw method from various in-house synthesized oxide soft glasses at the Glass Department of the Institute of Electronic Materials Technology (ITME). The discussion covers fundamental aspects of stack-and-draw technology used at ITME, through design methods, soft glass material issues and parameters, to demonstration of representative examples of fabricated structures and an experimental characterization of their optical properties and results obtained in typical applications. Specifically, demonstrators include microstructured image guides providing resolution of up to 16000 pixels sized up to 20 μm in diameter, and various photonic crystal fibers (PCFs): index-guiding regular lattice air-hole PCFs, hollow core photonic bandgap PCFs, or specialty PCFs like highly birefringent microstructured fibers or highly nonlinear fibers for supercontinuum generation. The presented content is put into context of previous work in the area reported by the group of authors, as well as other research team.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 4; 667-682
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mixtures of selected n-alkanes and Au nanoparticels for optical fiber threshold temperature transducers
Autorzy:
Przybysz, N.
Marć, Paweł
Tomaszewska, E.
Grobelny, Jarosław
Jaroszewicz, Leszek R.
Powiązania:
https://bibliotekanauki.pl/articles/1818228.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
optical fiber sensors
temperature treshold sensors
gold nanoparticles
n-alkanes
photonic crystal transducers
Opis:
Thermo-optic properties enhancement of the bi-stable temperature threshold sensors based on a partially filled photonic crystal fiber was reported. Previously tested transducers filled with a selected group of pure n-alkanes had in most cases differences between switching ON and OFF states. Therefore, the modification of filling material by using additional crystallization centers in the form of gold nanoparticles was applied to minimize this undesirable effect. The evaluation of the thermodynamic properties of pentadecane and its mixtures with 14 nm spherical Au nanoparticles based on the differential scanning calorimetry measurements was presented. Optical properties analysis of sensors prepared with these mixtures has shown that they are bounded with refractive index changes of the filling material. Particular sensor switches ON before melting process begins and switches OFF before crystallization starts. Admixing next group of n-alkanes with these nanoparticles allows to design six sensors transducers which change ON and OFF states at the same temperature. Thus, the transducers with a wider temperature range for fiber-optic multi-threshold temperature sensor tests will be used.
Źródło:
Opto-Electronics Review; 2020, 28, 4; 220--228
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mixtures of selected n-alkanes and Au nanoparticels for optical fiber threshold temperature transducers
Autorzy:
Przybysz, N.
Marć, P.
Tomaszewska, E.
Grobelny, J.
Jaroszewicz, L. R.
Powiązania:
https://bibliotekanauki.pl/articles/1818233.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
optical fiber sensors
temperature treshold sensors
gold nanoparticles
n-alkanes
photonic crystal transducers
Opis:
Thermo-optic properties enhancement of the bi-stable temperature threshold sensors based on a partially filled photonic crystal fiber was reported. Previously tested transducers filled with a selected group of pure n-alkanes had in most cases differences between switching ON and OFF states. Therefore, the modification of filling material by using additional crystallization centers in the form of gold nanoparticles was applied to minimize this undesirable effect. The evaluation of the thermodynamic properties of pentadecane and its mixtures with 14 nm spherical Au nanoparticles based on the differential scanning calorimetry measurements was presented. Optical properties analysis of sensors prepared with these mixtures has shown that they are bounded with refractive index changes of the filling material. Particular sensor switches ON before melting process begins and switches OFF before crystallization starts. Admixing next group of n-alkanes with these nanoparticles allows to design six sensors transducers which change ON and OFF states at the same temperature. Thus, the transducers with a wider temperature range for fiber-optic multi-threshold temperature sensor tests will be used.
Źródło:
Opto-Electronics Review; 2020, 28, 4; 220--228
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconfigurable and tunable multi-tap bandpass microwave photonic filter based on a hybrid-gain-assisted multi-wavelength fiber ring laser
Autorzy:
Peng, Mengmeng
Wang, Fei
Shi, Lun
Huang, Jingxin
Kang, Wen
Powiązania:
https://bibliotekanauki.pl/articles/174908.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
microwave photonic filter
multi-wavelength fiber ring laser
microwave signal processing
Opis:
A reconfigurable and tunable multi-tap bandpass microwave photonic filter based on a hybrid-gain-assisted multi-wavelength fiber ring laser (HMFRL) is proposed and experimentally demonstrated. The HMFRL containing a hybrid gain medium and a high birefringence fiber loop mirror serves as the multiple taps generator for the microwave photonic filter. In order to realize a bandpass filter, the multiple taps are phase modulated, then the modulated signal is launched into a coil of dispersion compensating fiber to introduce different time delays for each tap. As a result, a bandpass response is obtained at the output of a high speeding photodetector. By adjusting the bias of the semiconductor optical amplifier from 344 to 450 mA, the number of multiple taps can be increased without optical signal-to-noise ratio degradation. Thus, a multi-tap bandpass microwave photonic filter with bandwidth reconfiguring from 449 to 274 MHz is achieved. In addition, by changing the length of polarization maintaining fiber in the high birefringence fiber loop mirror, the wavelength spacing of the multiple taps can be adjusted, making the bandpass microwave photonic filter’s free spectral range tunable.
Źródło:
Optica Applicata; 2019, 49, 3; 499-507
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of Wall Velocity Measurements Using Photonic Doppler Velocimetry (PDV)
Autorzy:
Künzel, M.
Němec, O.
Pachman, J.
Powiązania:
https://bibliotekanauki.pl/articles/358399.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
bare fiber probe
Gurney constant
pentaerythritol tetranitrate
photonic Doppler velocimetry
Semtex
Opis:
The paper describes the measurement of cylindrical charge wall velocity profiles at various angles to the surface normal. The wall velocities were measured using simple zero generation photonic Doppler velocimetry (PDV). The detonation velocity was measured simultaneously using fiber optic probes coupled with a digital chronometer. The PDV probe angles were set in the range of -2° to 17° to the surface normal. Powdered pentaerythritol tetranitrate (PETN) and the PETN-based plastic-bonded explosive Semtex 1A were selected as the explosive materials in order to ensure reliable detonation under the measurement conditions. The explosive charges were confined in thin-walled aluminum tubes with an internal diameter of 16 mm and wall thickness of 2 mm. The results can be useful for the characterization of charge expansion phenomena and also for the optimization of cylinder test measurements using PDV. Gurney constants were determined for both explosives.
Źródło:
Central European Journal of Energetic Materials; 2015, 12, 1; 89-97
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dwójłomne włókna mikrostrukturalne
The birefringent microstructured optical fibers
Autorzy:
Kujawa, I.
Buczyński, R.
Pysz, D.
Stępień, R.
Powiązania:
https://bibliotekanauki.pl/articles/192314.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Materiałów Elektronicznych
Tematy:
światłowód fotoniczny
dwójłomność
własności polaryzacyjne
photonic fiber
birefringence
model properties
Opis:
W artykule zaprezentowano wykonane przez nas włókno mikrostrukturalne o symetrii dwuosiowej. Przedyskutowano również sposoby uzyskiwania anizotropii optycznej we włóknach tego typu oraz wpływ parametrów geometrycznych na dwójłomność włókien, ponadto przedstawiono wyniki symulacji struktur o eliptycznych elementach sieci, eliptycznym rdzeniu i przekroju prostokątnym. Wytworzone włókno scharakteryzowano metodą interferometrii spektralnej ze skrzyżowanymi polaryzatorami. Struktura światłowodu umożliwiła uzyskanie fazowej dwójłomność rzędu 10-4 tj. wartość zbliżoną do światłowodów PANDA.
We report on the fabrication of a birefringent photonic crystal fiber with a photonic cladding composed of elliptical holes ordered in a rectangular lattice. The choice of such configuration allows obtaining birefringence in photonic crystal fibers. In this case two-fold rotational symmetry is achieved and the polarized orthogonal modes (HE11x and HE11y) are not degenerated. We discuss the influence of structural parameters including the ellipticity of the air holes and the aspect ratio of the rectangular lattice on the birefringence and on the modal properties of the fiber.
Źródło:
Materiały Elektroniczne; 2010, T. 38, nr 3-4, 3-4; 17-26
0209-0058
Pojawia się w:
Materiały Elektroniczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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