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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Programming and Computer Software</journal-id><journal-title-group><journal-title xml:lang="en">Programming and Computer Software</journal-title><trans-title-group xml:lang="ru"><trans-title>Программирование</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0132-3474</issn><issn publication-format="electronic">3034-5847</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">675704</article-id><article-id pub-id-type="doi">10.31857/S0132347424020066</article-id><article-id pub-id-type="edn">ROVQMP</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>COMPUTER ALGEBRA</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КОМПЬЮТЕРНАЯ АЛГЕБРА</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Symbolic-numerical implementation of the model of adiabatic guided modes for two-dimensional irregular waveguides</article-title><trans-title-group xml:lang="ru"><trans-title>Символьно-численная реализация модели адиабатических волноводных мод для двумерных нерегулярных волноводов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Divakov</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Диваков</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>divakov_dv@pfur.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tyutyunnik</surname><given-names>А. А.</given-names></name><name xml:lang="ru"><surname>Тютюнник</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>tyutyunnik_aa@pfur.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Starikov</surname><given-names>D. А.</given-names></name><name xml:lang="ru"><surname>Стариков</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>starikov_da@pfur.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2024</year></pub-date><issue>2</issue><fpage>45</fpage><lpage>50</lpage><history><date date-type="received" iso-8601-date="2025-02-28"><day>28</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0132-3474/article/view/675704">https://journals.eco-vector.com/0132-3474/article/view/675704</self-uri><abstract xml:lang="en"><p>In this work, a symbolic-numerical solution of Maxwell’s equations is constructed, describing the guided modes of a two-dimensional smoothly irregular waveguide in the zeroth approximation of the model of adiabatic waveguide modes. The system of linear algebraic equations obtained in this approximation is solved symbolically. The dispersion relation is solved numerically using the parameter continuation method.</p></abstract><trans-abstract xml:lang="ru"><p>В работе построено символьно-численное решение уравнений Максвелла, описывающее направляемые моды двумерного плавно-нерегулярного волновода в рамках нулевого приближения модели адиабатических волноводных мод. Система линейных алгебраических уравнений, получаемая в нулевом приближеним модели адиабатических волноводных мод, решена символьно. Дисперсионное уравнение решено численно методом продолжения по параметру.</p></trans-abstract><kwd-group xml:lang="en"><kwd>symbolic solution of linear equations</kwd><kwd>symbolic solution of differential equations</kwd><kwd>adiabatic waveguide modes</kwd><kwd>guided modes</kwd><kwd>smoothly irregular waveguide</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>символьное решение линейных уравнений</kwd><kwd>символьное решение дифференциальных уравнений</kwd><kwd>адиабатические волноводные моды</kwd><kwd>направляемые моды</kwd><kwd>плавно-нерегулярный волновод</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Sevastianov L.A., Egorov A.A. Theoretical analysis of the waveguide propagation of electromagnetic waves in dielectric smoothlyirregular integrated structures // Optics and Spectroscopy. 2008. V. 105. № 4. 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