Evgenii M Dianov

Fiber Optics Research Center

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A N Gur'yanov

Institute of Chemistry of High-Purity Substances them. G.G.Devyatyh

A M Prokhorov

Prokhorov General Physics Institute

ММ

М. М. Бубнов

Fiber Optics Research Center

O.I. Medvedkov

Prokhorov General Physics Institute

V. F. Khopin

Institute of Chemistry of High-Purity Substances them. G.G.Devyatyh

ВГ

В. Г. Плотниченко

Fiber Optics Research Center

I. A. Bufetov

Russian Academy of Sciences

G. G. Devyatykh

Russian Academy of Sciences

АК

А.С. Курков

Ulyanovsk State University

АV

А. V. Belov

Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation

Cooperative Institutions

Russian Academy of Sciences

389

Prokhorov General Physics Institute

225

Fiber Optics Research Center

173

Vavilov Institute of General Genetics

108

P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Lomonosov Moscow State University

Institute of Chemistry of High-Purity Substances them. G.G.Devyatyh

Centre National de la Recherche Scientifique

Moscow Institute of Physics and Technology

N. I. Lobachevsky State University of Nizhny Novgorod

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In memory of Viktor Georgievich Veselago

Uspekhi Fizicheskih Nauk (2019)

S. V. Garnov Evgenii M Dianov В. И. Конов V.V. Osiko П. П. Пашинин

10.3367/ufnr.2019.02.038536

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Dispersion characteristics of the first higher modes in single-mode waveguides with elliptic cores

Soviet Journal of Quantum Electronics (1987)

Evgenii M Dianov Georgi Dyankov V. B. Neustruev

A spectral polarization method was used to determine the cutoff wavelengths and the spectral dependences of the relative group delays of eHE01, oEH01, and e,oHE21 modes in a fiber waveguide with an elliptic core. The group delays of modes of the same configuration (eHE01, oEH01, and e,oHE21 became almost equal for V≥ Vc +0.1 (where V is the normalized frequency) and a strong hopping between them resulted in depolarization of the radiation represented by these modes in a distance amounting to a few decimeters. The high precision of the measurements of some important wavelengths (λc, λe) on the dispersion curves made it possible to check the approximate method for the calculation of the critical parameters Vc in the model of an equivalent circular waveguide and also to check the shift formulas governing the cutoffs of the eHE01 and oEH01 modes. A good agreement between the calculated and measured values was obtained. This spectral polarization method was suitable for the investigation of the dispersion characteristics of single-mode fiber waveguides of any type, and its precision and information capacity are sufficient for checking approximate methods for the calculation of the dispersion characteristics of the first higher modes.

Mode (computer interface)

Waveguide

10.1070/qe1987v017n06abeh009284

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Citations (1)

Fluorine's effect on fiber optical losses induced by drawing

A. A. Abramov М. М. Бубнов Evgenii M Dianov S. L. Semjonov A. G. Shchebunjaev

Fiber optical losses approaching the ultimately low level are determined mainly by drawing conditions, in particular, by the three interconnected parameters of temperature, speed, and tension, and they also depend on the glass composition. For silica-germanium fibers it was found that germanium-induced losses (UV absorption and Rayleigh scattering) grow with higher temperatures and with lower drawing tensions.12 Yet, for fibers with a pure silica core and a fluorine-doped reflecting cladding the dependence was quite the opposite; namely, Rayleigh scattering grew with increasing drawing tension.3 We have investigated the influence of drawing conditions on the optical losses of silica-germanium fibers, the cores of which are additionally doped by fluorine, and we have shown the possibility of making the losses much less dependent on the drawing temperature and of reducing them to some extent, particularly for the fibers with the higher content of germanium.

Cladding (metalworking)

All-silica fiber

Plastic-clad silica fiber

Fluorine

10.1364/ofc.1994.tub1

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Ytterbium fibre laser with a heavily Yb³⁺-doped glass fibre core

Quantum Electronics (2006)

I. A. Bufetov S L Semenov A. F. Kosolapov Mikhail Melkumov V V Dudin

The use of optical fibres with a high concentration of active ions in the fibre core allows the reduction of the active fibre length and the increase in the threshold powers of various nonlinear effects in the fibre, thereby increasing the maximum output power of fibre lasers. For this purpose, we manufactured a highly concentrated ytterbium-doped (∼1.0×1021cm-3) phosphate glass for the active fibre core and a pure glass of a similar composition for the fibre cladding. A single-mode fibre is fabricated from these glasses and generation is obtained in an ytterbium laser based on this fibre with the slope efficiency of no less than 60% at a wavelength of 975 nm.

Ytterbium

10.1070/qe2006v036n03abeh013123

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Citations (16)

Nonlinear fiber optics

Soviet Journal of Quantum Electronics (1988)

Evgenii M Dianov P. V. Mamyshev A M Prokhorov

The advantages of fiber waveguides over bulk nonlinear media are demonstrated. A review is given of the main nonlinear effects which occur during propagation of laser radiation in fiber waveguides. The most interesting applications of nonlinear fiber optics are discussed.

10.1070/qe1988v018n01abeh010192

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Citations (510)

Photoluminescence centers in γ-irradiated bismuth-doped glasses

B. I. Denker B. I. Galagan I. L. Shulman S. E. Sverchkov Evgenii M Dianov

In the present investigation the authors have shown that spectrally identical NIR emitting centers can be formed in Bi doped phosphate glasses either by high-temperature melting or by room-temperature γ-irradiation. The paper illustrates this statement by comparing the 1.05-1.2 μm emission excitation spectra in high-temperature melted and in γ-irradiated low-temperature melted glass samples of identical composition. The latter sample exhibited no NIR emission before γ-irradiation.

Bismuth

Phosphate glass

10.1109/cleoe.2011.5942837

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Mutual influence of parametric and Raman effects in silica fibers

Integrated Photonics Research (1990)

E.A. Golovchenko Evgenii M Dianov P. V. Mamyshev A. N. Pilipetskiǐ Anton M. Prokhorov

Usually the parametric and the stimulated Raman scattering (SRS) effects in fibers are discussed independent of each other. We show here theoretically and experimentally that parametric interaction can suppress SRS in single-mode fibers. We also show that the Raman nonlinearity considerably changes the values of increment and frequency of modulational instability (MI).

Modulational Instability

Raman amplification

10.1364/ipr.1990.mc2

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Low-loss two-channel fiber-optic waveguide

Soviet Journal of Quantum Electronics (1984)

A.B. Grudinin A N Gur'yanov Evgenii M Dianov S V Ignat'ev S. I. Miroshnichenko

The losses and cross talk in a two-channel fiber-optic waveguide were investigated experimentally. The minimum losses were 1.5 dBAm in the central channel and 3.5 dB/km (at λ = 1.55 μ) in the annular channel, the channels being optically decoupled by better than 35 dB. A modified near-field method is described for measuring the absolute refractive index profile

Waveguide

10.1070/qe1984v014n01abeh004631

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Citations (2)

Fibre-optic cable for CO laser power transmission

Electronics Letters (1984)

Evgenii M Dianov V.J. Masychev В. Г. Плотниченко V. К. Sysoev P.J. Baikalov

The description of the experimental fibre-optic cable on the base of chalcogenide glass IR fibre, which can be used for medical and technological purposes, is cited in the letter. The cable length is 1–1.5 m, the fibre diameter is 0.5–0.8 mm and the total cable diameter is 10 mm. The transmission of 7 W continuous CO laser radiation power for a few hours is realised through the cable.

Optical fiber cable

10.1049/el:19840087

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Citations (10)

Николай Васильевич Карлов (к 80-летию со дня рождения)

Uspekhi Fizicheskih Nauk (2009)

Сергей Николаевич Багаев Александр Алексеевич Боярчук F. V. Bunkin Andrei V. Gaponov-Grekhov Evgenii M Dianov

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