Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Ivan Kasik"'
Autor:
Ivan Kasik, Vlastimil Matejec, Hayer Milos, Kamradek Michal, Podrazky Ondrej, Mrazek Jan, Peterka Pavel, Honzatko Pavel
Publikováno v:
Ceramics-Silikáty, Vol 64, Iss 1, Pp 29-34 (2019)
Optical fibers represent the key component of modern optical telecommunication networks. Such fibers are based on silica glass of high purity usually modified with several percent of glassforming oxides such as GeO₂ and P₂O₅. These materials wi
Externí odkaz:
https://doaj.org/article/64353331cb404d50b135c634823aba7f
Autor:
Michal Kamradek, Ivan Kasik, Jan Aubrecht, Jan Mrazek, Ondrej Podrazky, Jakub Cajzl, Petr Varak, Vaclav Kubecek, Pavel Peterka, Pavel Honzatko
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 5, Pp 1-10 (2019)
Efficient holmium fiber lasers have been studied as attractive laser sources operating around 2.1 μm. We report on holmium-doped silica fibers prepared by the modified chemical vapor deposition in combination with either a solution-doping method or
Externí odkaz:
https://doaj.org/article/baf94150beb540d9855f8e5f58fa78fa
Autor:
Jan Mrazek, Ivan Kasik, Lenka Prochazkova, Vaclav Cuba, Jan Aubrecht, Jakub Cajzl, Ondrej Podrazky, Pavel Peterka, Martin Nikl
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 12, Iss 6, Pp 567-574 (2014)
Erbium-doped active optical fiber was successfully prepared by incorporation of ceramic nanocrystals inside a core of optical fiber. Modified chemical vapor deposition was combined with solution-doping approach to preparing preform. Instead of inorga
Externí odkaz:
https://doaj.org/article/3ca8531d171a4995aa563d929603e509
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 11, Iss 1, Pp 29-35 (2013)
The fabrication of Er-doped ZrO2-based nanocrystalline phase-separated optical fiber preforms using the MCVD and solution doping techniques is presented and discussed in details in the paper. Preforms with nearly transparent cores containing Er-doped
Externí odkaz:
https://doaj.org/article/b11e5a8b63914ef08426f8b4610bfeea
Autor:
Marcin Franczyk, Dariusz Pysz, Ryszard Stepien, Jaroslaw Cimek, Rafal Kasztelanic, Fang Lin Chen, Mariusz Klimczak, Luming Zhao, Ivan Kasik, Pavel Peterka, Ryszard Buczynski
Publikováno v:
Journal of Lightwave Technology. 40:7180-7190
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8dd8ddc566857804b051f59579fb4a5
https://doi.org/10.1109/jlt.2022.3199581
https://doi.org/10.1109/jlt.2022.3199581
Publikováno v:
Chemosensors, Vol 11, Iss 10, p 521 (2023)
Recently, rapid progress has been achieved in the field of nanomaterial preparation and investigation. Many nanomaterials have been employed in optical chemical sensors and biosensors. This review is focused on fiber-optic nanosensors for chemical se
Externí odkaz:
https://doaj.org/article/8bde59d646894220a85062b19103e24e
Lanthanide-doped yttrium titanium oxides, which crystallize in a pyrochlore structure with general formula (RExY1-x)2Ti2O7 (RE=rare earth element), have been extensively investigated in recent years for their interesting physical and chemical propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::464e632eb5f7dc368d83813e6267e5bd
Autor:
Petr Vařák, Michal Kamrádek, Jan Mrázek, Ondřej Podrazký, Jan Aubrecht, Pavel Peterka, Pavla Nekvindová, Ivan Kašík
Publikováno v:
Optical Materials: X, Vol 15, Iss , Pp 100177- (2022)
Silica glass doped with rare-earth ions remains one of the most frequently used materials for fiber lasers and amplifiers, owing to various advantages such as high thermal resistance, mechanical and chemical durability, high transparency up to 2.2 μ
Externí odkaz:
https://doaj.org/article/f6d1434d2cbb44959e1695f0c906590f
Autor:
Ondřej Podrazký, Jan Mrázek, Jana Proboštová, Soňa Vytykáčová, Ivan Kašík, Šárka Pitrová, Ali A. Jasim
Publikováno v:
Sensors, Vol 21, Iss 15, p 5075 (2021)
A practical demonstration of pH measurement in real biological samples with an in-house developed fiber-optic pH sensor system is presented. The sensor uses 8-hydroxypyrene-1,3,6-trisulfonate (HPTS) fluorescent dye as the opto-chemical transducer. Th
Externí odkaz:
https://doaj.org/article/2259d1fda71240aeaa7fd28a74101616
Publikováno v:
Sensors, Vol 21, Iss 6, p 1928 (2021)
A monolithic fiber laser operating in the short wavelength infrared that is suitable for CO2 gas sensing applications is proposed and presented. The current study reports a laser design based on the direct inscription of a monolithic Fabry–Perot (F
Externí odkaz:
https://doaj.org/article/9c8cae59543043cea822ef8fe4c6c648