Zobrazeno 1 - 10
of 19
pro vyhledávání: '"V. N. Protopopov"'
Autor:
Valerii A Smirnov, V. N. Protopopov, Evgeny V Zharikov, Kirill A. Subbotin, A.V. Gaister, T. F. Veremeichik
Publikováno v:
Quantum Electronics. 30:449-453
The absorption spectra of impurity vanadium ions in forsterite crystals are studied in the wavelength range from 600 to 2000 nm. It is found that the V4+ ion in the tetrahedral coordination in crystals grown by the Czochralski technique exhibits stro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f2505a96b205bb9d127ec28eb6ddf42
https://doi.org/10.1070/qe2000v030n05abeh001740
https://doi.org/10.1070/qe2000v030n05abeh001740
Autor:
A. Iocco, V. N. Protopopov, D. M. Costantini, Oleg I. Medvedkov, Evgenii M Dianov, Rene-Paul Salathe, Hans G. Limberger, Sergei A Vasil'ev
Publikováno v:
Quantum Electronics. 29:65-68
The properties of the cladding modes of an optical fibre, excited by photoinduced long-period fibre gratings, were investigated by the near- and far-field methods. It is shown that the cladding modes considered are of the HE1m type. A satisfactory ag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af6e4ff7361f80972dae392c46823938
https://doi.org/10.1070/qe1999v029n01abeh001413
https://doi.org/10.1070/qe1999v029n01abeh001413
Publikováno v:
Quantum Electronics. 27:146-149
Experimental and theoretical investigations are reported of the spectral characteristics of photoinduced in-fibre refractive-index gratings for coupling the fibre core and cladding modes. A theoretical model is developed for predicting the transmissi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2738a7ebdff993b367e583bc9bab6dd
https://doi.org/10.1070/qe1997v027n02abeh000893
https://doi.org/10.1070/qe1997v027n02abeh000893
Publikováno v:
Quantum Electronics. 26:1029-1034
A review is given of the methods proposed so far for the flattening of the gain spectrum of erbium fibre amplifiers. The most promising methods for fibre-optic communication lines with wavelength-division channel multiplexing are identified.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84dda7b67409f6e72b9da90d5a783066
https://doi.org/10.1070/qe1996v026n12abeh000866
https://doi.org/10.1070/qe1996v026n12abeh000866
Autor:
Andrei S Kurkov, E. M. Dianov, Vladimir Karpov, S L Semenov, V. N. Protopopov, A.G. Shebuniaev, R.R. Khrapko, Konstantin M. Golant
Publikováno v:
Optical Materials. 3:181-185
For the first time the reduced-pressure plasma CVD technology was applied to fabrication of active silica optical fibers with all-depressed index structure. Using surface plasma CVD method, fiber preforms with an Er-doped silica core and fluorine dop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3d0a589d20ac50f86b9f40de65bb789
https://doi.org/10.1016/0925-3467(94)90003-5
https://doi.org/10.1016/0925-3467(94)90003-5
Autor:
Eugeni M. Dianov, Hans G. Limberger, V. N. Protopopov, René Paul Salathé, D. Varelas, Sergei A. Vasiliev, Oleg I. Medvedkov, A. Iocco
Publikováno v:
Optics letters. 24(16)
The group refractive-index difference of cladding modes excited by a long-period fiber grating is characterized by use of the technique of optical low-coherence reflectometry, with a precision of10(-4) . Very good agreement between theoretical and ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64ed86141b2699d3bcd410c64f7f9d11
https://pubmed.ncbi.nlm.nih.gov/18073954
https://pubmed.ncbi.nlm.nih.gov/18073954
Autor:
V. N. Protopopov, Yu V. Ignat'ev, V. T. Punin, A. E. Lakhtikov, Yu. N. Khirnii, Yu. A. Khokhlov, V. V. Chulkov, A. P. Morovov, S. N. Abramovich, V. G. Gogolev, B. V. Ferapontov, V. A. Starodubtsev, G. P. Nikolayev, N. V. Zhidkov, V. M. Izgorodin
Publikováno v:
SPIE Proceedings.
The research results of an opportunity of radiation-stimulated diffusion use for laser fusion microtargets filling with heavy gases are given, which they can not be filled with by means of usual diffusion. The theoretical estimates of quantity and ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c4507c5278ac7acc956d3638af62c07
https://doi.org/10.1117/12.537453
https://doi.org/10.1117/12.537453
Autor:
Sergei A. Vasiliev, A. Iocco, E. M. Dianov, V. N. Protopopov, Hans G. Limberger, Oleg I. Medvedkov, D. Varelas, Rene-Paul Salathe
Publikováno v:
OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.
The group index of well-defined cladding modes has been characterized for the first time to our knowledge by optical low-coherence reflectometry (OLCR) with a precision
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42a48e0d2a853b2bdbeecb7185c0c859
https://doi.org/10.1109/ofc.1999.768136
https://doi.org/10.1109/ofc.1999.768136
Autor:
W. R. L. Clements, Vladimir Karpov, Andrei S Kurkov, V. N. Protopopov, Vladimir M Paramonov, E. M. Dianov, M. P. Bachynski
Publikováno v:
OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.
An all-fiber 1.48-/spl mu/m generator based on a LD-pumped Yb-doped double-clad laser with intracavity Raman wavelength conversion has been developed. Second-order Raman Stokes radiation was generated in a phosphorosilicate-resonator formed by two pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b716f37ead42360fc23f1a50f4906e4
https://doi.org/10.1109/ofc.1999.766383
https://doi.org/10.1109/ofc.1999.766383
Autor:
V. N. Protopopov, Andrei S Kurkov, R.R. Khrapko, V. A. Bogatyrjov, Konstantin M. Golant, Vladimir Karpov, E. M. Dianov
Publikováno v:
Integrated Photonics Research.
Optical amplifiers with broad and flat gain spectrum are very important for WDM system applications. Various methods have been proposed for flattening gain spectrum of EDFA, most of which are based on passive or active filtering of the main gain peak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23729f3f1ef10099bd672c9c5ce4daae
https://doi.org/10.1364/ipr.1995.ifc3
https://doi.org/10.1364/ipr.1995.ifc3