Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Andrey A. Umnikov"'
Autor:
Svetlana S. Aleshkina, Danila A. Davydov, Vladimir V. Velmiskin, Mikhail V. Yashkov, Andrey A. Umnikov, Sergey V. Alyshev, Liudmila D. Iskhakova, Mikhail M. Bubnov, Denis S. Lipatov, Mikhail E. Likhachev
Publikováno v:
Photonics, Vol 11, Iss 1, p 89 (2024)
A novel Yb-doped fiber design for improved lasing near 976 nm based on spectral filtering of the amplified spontaneous emission near 1030 nm was realized and investigated. A very sharp short-pass filter was implemented by adding appropriately chosen
Externí odkaz:
https://doaj.org/article/1f1c740b003a436e8e0980e98b71a3ce
Autor:
Danila A. Davydov, Andrey A. Rybaltovsky, Svetlana S. Aleshkina, Vladimir V. Velmiskin, Mikhail E. Likhachev, Sergei M. Popov, Dmitry V. Ryakhovskiy, Yuriy K. Chamorovskiy, Andrey A. Umnikov, Denis S. Lipatov
Publikováno v:
Photonics, Vol 10, Iss 8, p 951 (2023)
All-fiber, polarization maintaining, narrow-bandwidth, Yb-doped fiber lasers with randomly distributed feedback operated near 976 nm were realized for the first time. It was shown that the laser operated in a single, longitudinal mode regime during i
Externí odkaz:
https://doaj.org/article/2b0f9bd58f154764a3f1bb3d91d8a2d9
Autor:
Denis S. Lipatov, Alexey S. Lobanov, Alexey N. Guryanov, Andrey A. Umnikov, Alexey N. Abramov, Maxim M. Khudyakov, Mikhail E. Likhachev, Oleg G. Morozov
Publikováno v:
Fibers, Vol 9, Iss 3, p 15 (2021)
The technical process of the synthesis of a fluorophosphosilicate (FPS) glass core was thoroughly investigated for the first time utilizing a modified chemical vapor deposition (MCVD) all-gas-phase fabrication method. It was discovered that the limit
Externí odkaz:
https://doaj.org/article/e03de428fc43456787a22f8e900ad45e
Autor:
Konstantin K. Bobkov, Egor K. Mikhailov, Tatyana S. Zaushitsyna, Andrey A. Rybaltovsky, Svetlana S. Aleshkina, Mikhail A. Melkumov, Mikhail M. Bubnov, Denis S. Lipatov, Mikhail V. Yashkov, Alexey N. Abramov, Andrey A. Umnikov, Alexey N. Guryanov, Mikhail E. Likhachev
Publikováno v:
Journal of Lightwave Technology. 40:6230-6239
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bd3eef43b431c49cda196c26472c1b0
https://doi.org/10.1109/jlt.2022.3191862
https://doi.org/10.1109/jlt.2022.3191862
Autor:
Yang Hong, Kyle R. H. Bottrill, David J. Richardson, Yu Wang, Naresh Kumar Thipparapu, Periklis Petropoulos, Natsupa Taengnoi, Andrey A Umnikov, Jayanta K. Sahu
Publikováno v:
Journal of Lightwave Technology. 38:2278-2284
In this article, we experimentally demonstrate dual O+C-band direct-detection wavelength division multiplexed (WDM) transmission over 50 km of standard single-mode fibre, wherein 4 × 40-Gb/s Nyquist on-off keying (OOK) modulation is used in the O-ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::396e4613b771c83887ba37d521997ce1
https://doi.org/10.1109/jlt.2020.2964155
https://doi.org/10.1109/jlt.2020.2964155
Photosensitive Yb-Doped Germanophosphosilicate Artificial Rayleigh Fibers as a Base of Random Lasers
Autor:
A. N. Abramov, Dmitry Ryakhovskiy, Oleg V. Butov, Denis S. Lipatov, I. L. Vorob’ev, Andrey A. Umnikov, A. A. Rybaltovsky, S. M. Popov, A. O. Kolosovskii, Oleg G. Morozov, V. V. Voloshin, Yuriy K. Chamorovskiy
Publikováno v:
Fibers
Volume 9
Issue 9
Fibers, Vol 9, Iss 53, p 53 (2021)
Volume 9
Issue 9
Fibers, Vol 9, Iss 53, p 53 (2021)
Asingle-mode Yb-doped germanophosphosilicate fiber with ultra-low optical losses (less than 2 dB/km) was fabricated by means of the MCVD method utilizing an all-gas-phase deposition technique developed “in house”. The absorption and luminescent s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58b9733972780382d8bf9c99208f5018
Autor:
Mikhail E. Likhachev, Andrey A. Umnikov, Mikhail M. Bubnov, Konstantin K. Bobkov, Denis S. Lipatov, Mikhail V. Yashkov, A. N. Abramov, Aleksey N. Guryanov
Publikováno v:
Micro-structured and Specialty Optical Fibres VII.
In this paper we systematically study a limitation for maximum of Yb dopant concentration in silica based fibers. Two the most popular glass matrixes (F-Al2O3-SiO2 and Al2O3-P2O5-SiO2) were thoroughly investigated in this respect. A possibility to in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c33daff7d8ca0dd1e104d648e3b58a28
https://doi.org/10.1117/12.2592505
https://doi.org/10.1117/12.2592505
Autor:
A. N. Abramov, Andrey A. Umnikov, Denis S. Lipatov, M. M. Khudyakov, Mikhail E. Likhachev, Alexey S. Lobanov, Oleg G. Morozov, A N Gur'yanov
Publikováno v:
Fibers, Vol 9, Iss 15, p 15 (2021)
Fibers
Volume 9
Issue 3
Fibers
Volume 9
Issue 3
The technical process of the synthesis of a fluorophosphosilicate (FPS) glass core was thoroughly investigated for the first time utilizing a modified chemical vapor deposition (MCVD) all-gas-phase fabrication method. It was discovered that the limit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9c39e0bb8404129d5b22ce45f319cd4
https://www.mdpi.com/2079-6439/9/3/15
https://www.mdpi.com/2079-6439/9/3/15
Autor:
Hesham Sakr, David J. Richardson, Francesco Poletti, Periklis Petropoulos, Yang Hong, Natsupa Taengnoi, Kyle R. H. Bottrill, John R. Hayes, Jayanta K. Sahu, Yu Wang, Andrey A Umnikov, Naresh Kumar Thipparapu, Hyuntai Kim, Thomas D. Bradley, Gregory T. Jasion
Publikováno v:
Journal of Lightwave Technology
In this article, we report high-speed multi-band direct-detection (DD) transmission over a hollow-core nested antiresonant nodeless fiber (NANF). Thanks to the ultrawide bandwidth of the NANF, we demonstrate dual-band transmission across the O- and C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6175e15d8087cc63865e7ba729bedeba
https://eprints.soton.ac.uk/438389/
https://eprints.soton.ac.uk/438389/
Autor:
N. J. Ramírez-Martínez, Jayanta K. Sahu, Di Lin, Pranabesh Barua, Andrey A Umnikov, M. Núñez-Velázquez
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
With ytterbium doped fiber (YDF) lasers and amplifiers have reached continuous wave output power of multi-kW with direct diode pumping [1] and 10kW with tandem pumping [2] in a good beam quality, today fiber lasers are becoming the laser choice for m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ae049d8d2619486a4a00ae60c995552
https://doi.org/10.1109/cleoe-eqec.2019.8872677
https://doi.org/10.1109/cleoe-eqec.2019.8872677