Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Manfred, Rothhardt"'
Publikováno v:
Advanced Photonics Research, Vol 3, Iss 1, Pp n/a-n/a (2022)
Applications associated with complex, structured optical fibers having no circular symmetry often require information about their specific angular orientation. Such cases include, for example, splicing, sophisticated mode coupling, selective fiber Br
Externí odkaz:
https://doaj.org/article/31dbd8ce9eb8484f968b20510b25a105
Publikováno v:
Sensors, Vol 22, Iss 10, p 3837 (2022)
A novel multicore optical waveguide component based on a fiber design optimized towards selective grating inscription for multiplexed sensing applications is presented. Such a fiber design enables the increase in the optical sensor capacity as well a
Externí odkaz:
https://doaj.org/article/6805f2c63e0e461c9c459f975ddd09c6
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 1, Pp 1-9 (2017)
Multiwavelength reflection spectra induced by an acoustically modulated fiber Bragg grating (FBG) in a highly birefringent suspended core fiber are experimentally investigated. Longitudinal acoustic waves interacting with a grating generate side lobe
Externí odkaz:
https://doaj.org/article/c3a6d8d23bdc429bb3daa7c3af1dd90c
Publikováno v:
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 16, Iss 6, Pp 1018-1022 (2016)
Subject of Research.We present comparative results of the chirped Bragg gratings inscription efficiency in optical fiber of domestic production with and without low-temperature hydrogen loading. Method. Chirped fiber Bragg gratings inscription was ma
Externí odkaz:
https://doaj.org/article/0360f520840144fdb4a7783a938d4d23
Autor:
Egor Manuylovich, Manfred Rothhardt, Martin Becker, Namita Sahoo, Ricardo E. Silva, David J. Webb, Hartmut Bartelt
Publikováno v:
IEEE Photonics Technology Letters. 33:1379-1382
We demonstrate acousto-optic modulation of a fiber Bragg grating in a birefringent suspended core fiber up to frequencies of 5.2 MHz for the first time. At acoustic resonances lower than 820 kHz, the reflectivity of the orthogonal polarization modes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b1fb4a6c1bd02ea044633de215da83d
https://doi.org/10.1109/lpt.2021.3123258
https://doi.org/10.1109/lpt.2021.3123258
Publikováno v:
Sensors, Vol 14, Iss 9, Pp 15786-15801 (2014)
Along with the dose rate and the total irradiation dose measurements, the knowledge of the beam localization and the beam profile/energy distribution in the beam are parameters of interest for charged particle accelerator installations when they are
Externí odkaz:
https://doaj.org/article/0a374e5ccc924ed587cdddd909165a1d
Autor:
Ricardo E. Silva, Martin Becker, Alexander Hartung, Manfred Rothhardt, Alexandre A. P. Pohl, Hartmut Bartelt
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 6, Pp 1-8 (2014)
The acousto-optic modulation of fiber Bragg gratings in a four-hole suspended core fiber is experimentally demonstrated. Strong modulations with a reflectivity amplitude decrease by up to 67% and a 57% bandwidth increase in the Bragg resonance are ob
Externí odkaz:
https://doaj.org/article/81ef7d39ffb64b0ea65d6e6e783f421a
Autor:
André D. Gomes, Martin Becker, Jan Dellith, Mohammad I. Zibaii, Hamid Latifi, Manfred Rothhardt, Hartmut Bartelt, Orlando Frazão
Publikováno v:
Sensors, Vol 19, Iss 3, p 453 (2019)
New miniaturized sensors for biological and medical applications must be adapted to the measuring environments and they should provide a high measurement resolution to sense small changes. The Vernier effect is an effective way of magnifying the sens
Externí odkaz:
https://doaj.org/article/49924d29b92c454682cbb5be4b6fd898
Autor:
Yitao Wang, Maxime Cavillon, John Ballato, Thomas Hawkins, Tino Elsmann, Manfred Rothhardt, Rudy Desmarchelier, Guillaume Laffont, Bertrand Poumellec, Matthieu Lancry
Publikováno v:
Advanced Optical Materials
Advanced Optical Materials, 2022, 10 (18), pp.2200379. ⟨10.1002/adom.202200379⟩
Advanced Optical Materials, 2022, 10 (18), pp.2200379. ⟨10.1002/adom.202200379⟩
International audience; Aluminosilicate glasses offer wide-ranging potential as enabling materials for a new generation of optical devices operating in harsh environments. In this work, a nonconventional manufacturing process, the molten core method,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56eb9d3f5c6243511531be2fcd129960
https://hal.science/hal-04125496/document
https://hal.science/hal-04125496/document
Autor:
Hartmut Bartelt, Johan Vlekken, Martin Becker, Christoph Chojetztki, Manfred Rothhardt, Sven Brueckner, Eric Lindner
Publikováno v:
Sensors, Vol 9, Iss 10, Pp 8377-8381 (2009)
We report about the possibility of using regenerated fiber Bragg gratings generated in photosensitive fibers without applying hydrogen loading for high temperature sensor networks. We use a thermally induced regenerative process which leads to a seco
Externí odkaz:
https://doaj.org/article/fff6ca78538e4d7b9be2a8ab3f7b2a71