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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">tuzsut</journal-id><journal-title-group><journal-title xml:lang="ru">Труды учебных заведений связи</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Telecommunication Universities</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-324X</issn><issn pub-type="epub">2712-8830</issn><publisher><publisher-name>СПбГУТ</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">tuzsut-21</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>НЕЛИНЕЙНО-ОПТИЧЕСКИЕ ПРЕОБРАЗОВАНИЯ ПИКОСЕКУНДНЫХ ЛАЗЕРНЫХ ИМПУЛЬСОВ В МНОГОМОДОВЫХ МИКРОСТРУКТУРИРОВАННЫХ СВЕТОВОДАХ С УМЕРЕННОЙ НЕЛИНЕЙНОСТЬЮ</article-title><trans-title-group xml:lang="en"><trans-title>NONLINEAR OPTICAL TRANSFORMATION OF PICOSECOND LASER PULSES IN MULTIMODE MICROSTRUCTURED FIBERS WITH LIMITED NONLINEARITY</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демидов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Demidov</surname><given-names>V. ..</given-names></name></name-alternatives><email xlink:type="simple">demidov@goi.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дукельский</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dukelskii</surname><given-names>K. ..</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Леонов</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonov</surname><given-names>S. ..</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Матросова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Matrosova</surname><given-names>A. ..</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Научно-производственное объединение Государственный оптический институт им. С.И. Вавилова<country>Россия</country></aff><aff xml:lang="en">Research and production association S.I. Vavilov State Optical Institute<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича; Санкт-Петербургский национальный исследовательский университет информационных технологий, механики и оптики<country>Россия</country></aff><aff xml:lang="en">The Bonch-Bruevich Saint-Petersburg State University of Telecommunications; Saint Petersburg National Research University of Information Technologies<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Московский государственный технический университет им. Н.Э. Баумана<country>Россия</country></aff><aff xml:lang="en">Bauman Moscow State Technical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>07</day><month>04</month><year>2021</year></pub-date><volume>4</volume><issue>1</issue><fpage>61</fpage><lpage>66</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Демидов В.В., Дукельский К.В., Леонов С.О., Матросова А.С., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Демидов В.В., Дукельский К.В., Леонов С.О., Матросова А.С.</copyright-holder><copyright-holder xml:lang="en">Demidov V..., Dukelskii K..., Leonov S..., Matrosova A...</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://tuzs.sut.ru/jour/article/view/21">https://tuzs.sut.ru/jour/article/view/21</self-uri><abstract><p>Приведены результаты теоретических и экспериментальных исследований преобразования импульсов пикосекундной длительности иттербиевого лазера (λ = 1030 нм) в кварцевых микроструктурированных световодах с предельно высокой долей пустот в оболочке и сердцевиной диаметром от 8 до 11 мкм, обладающих умеренной оптической нелинейностью (γ = 2-3 1/(Вт·км)). Установлена преобладающая роль процесса четырехволнового смешения в нелинейном преобразовании излучения в антистоксовой части спектра при накачке световодов в режиме нормальной дисперсии.</p></abstract><trans-abstract xml:lang="en"><p>The results of theoretical and experimental studies of the transformation of picosecond pulses of an ytterbium laser (λ = 1030 nm) in silica-based microstructured fibers with an extremely high air-filling fraction and a core of diameters from 8 to 11 μm having a limited optical nonlinearity (γ = 2-3 1/(W·km)) are presented. The prevailing role of the four-wave mixing process in the nonlinear transformation of radiation in the anti-Stokes part of the spectrum has been discovered when pumping optical fibers in the normal dispersion regime.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>микроструктурированный световод</kwd><kwd>многомодовый режим</kwd><kwd>оптическая нелинейность</kwd><kwd>преобразование излучения</kwd><kwd>суперконтинуум</kwd><kwd>четырехволновое смешение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>microstructured fiber</kwd><kwd>multimode regime</kwd><kwd>optical nonlinearity</kwd><kwd>transformation of radiation</kwd><kwd>supercontinuum</kwd><kwd>four-wave mixing</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Butcher P.N., Cotter D. The elements of nonlinear optics (Cambridge studies in modern optics). 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