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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">radioelectronics</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений России. Радиоэлектроника</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of the Russian Universities. Radioelectronics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1993-8985</issn><issn pub-type="epub">2658-4794</issn><publisher><publisher-name>Saint Petersburg Electrotechnical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32603/1993-8985-2018-21-3-71-78</article-id><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-237</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>РАДИОФОТОНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MICROWAVE PHOTONICS</subject></subj-group></article-categories><title-group><article-title>Аналитическая теория дисперсии оптических волн регулярных микроволноводов</article-title><trans-title-group xml:lang="en"><trans-title>Analytical Dispersion Theory for Optical Waves in Regular Microwaveguides</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>Чеплагин</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Cheplagin</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чеплагин Николай Анатольевич – магистр техники и технологии по направлению "Электроника и микроэлектроника" (2012), аспирант кафедры физической электроники и технологии. Автор одной научной публикации. Сфера научных интересов – радиофотоника. </p><p> </p><p>ул. Профессора Попова, д. 5, Санкт-Петербург, 197376.</p></bio><bio xml:lang="en"><p>Nikolay A. Cheplagin – Master’s Degree of Techniques and Technology in Electronics and Micro-Electronics (2012), postgraduate student of the Department of Physical Electronics and Technology of Saint Petersburg Electrotechnical University "LETI". The author of one scientific publication. Area of expertise: microwave photonics. </p><p>5, Professor Popov Str., 197376, St. Petersburg.</p></bio><email xlink:type="simple">letishnick@gmail.com</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>Зарецкая</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaretskaya</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зарецкая Галина Александровна – магистр техники и технологии по направлению "Электроника и микроэлектроника" (2012), аспирантка кафедры физической электроники и технологии . Автор шести научных публикаций. Сфера научных интересов – радиофотоника.  </p><p>ул. Профессора Попова, д. 5, Санкт-Петербург, 197376.</p></bio><bio xml:lang="en"><p>Galina A. Zaretskaya – Master’s Degree of Techniques and Technology in Electronics and Micro-Electronics (2012), postgraduate student of the department of Physical Electronics and Technology of Saint Petersburg Electrotechnical University "LETI". The author of six scientific publications. Area of expertise: microwave photonics. </p><p>5, Professor Popov Str., 197376, St. Petersburg.</p></bio><email xlink:type="simple">shishmacova@gmail.com</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>Калиникос</surname><given-names>Б. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalinikos</surname><given-names>B. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калиникос Борис Антонович – доктор физико-математических наук (1985), профессор (1989), заведующий кафедрой физической электроники и технологии . Автор более 300 научных работ. Сфера научных интересов – cверхвысокочастотные линейные и нелинейные волновые процессы в магнетиках, а также смежные явления; cолитоны, нелинейная волновая динамика и хаос; сверхвысокочастотная микроэлектроника; радиофотоника. </p><p>ул. Профессора Попова, д. 5, Санкт-Петербург, 197376.</p></bio><bio xml:lang="en"><p>Boris A. Kalinikos – Ph.D. and D.Sc. in physics and mathematics (1985), Professor (1989), Head of the Department of Physical Electronics and Technology of Saint Petersburg Electrotechnical University "LETI". The author of more than 300 scientific publications. Area of expertise: microwave linear and nonlinear processes in magnetics, as well as related phenomena; solitons, nonlinear wave dynamics and chaos; microwave microelectronics; microwave photonics. </p><p>5, Professor Popov Str., 197376, St. Petersburg.</p></bio><email xlink:type="simple">boris.kalinikos@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный электротехнический  университет "ЛЭТИ" им. В. И. Ульянова (Ленина) .</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Electrotechnical University "LETI" .</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2018</year></pub-date><volume>0</volume><issue>3</issue><fpage>71</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чеплагин Н.А., Зарецкая Г.А., Калиникос Б.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Чеплагин Н.А., Зарецкая Г.А., Калиникос Б.А.</copyright-holder><copyright-holder xml:lang="en">Cheplagin N.A., Zaretskaya G.A., Kalinikos B.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://re.eltech.ru/jour/article/view/237">https://re.eltech.ru/jour/article/view/237</self-uri><abstract><p>Разработан метод анализа дисперсионных характеристик направляемых мод в регулярных оптических микроволноводах малого поперечного сечения. Метод основан на введении поправок к продольному волновому числу мод прямоугольного волновода, выбранного в качестве базового, при искажении формы его поперечного сечения. Распределения электромагнитного поля и продольного волнового числа базового волновода рассчитываются методом разделения переменных. Поправка к продольному волновому числу рассчитывается аналитически в терминах теории связанных мод. Указанная поправка в виде коэффициента межмодовой связи возникает на основании совместного использования полной системы уравнений Максвелла при введении понятия об эффективных источниках. Показано, что последовательный учет граничных условий электродинамики приводит к форме коэффициента связи, включающей объемную и поверхностную составляющие. Разработанный метод применен для расчета дисперсионных характеристик низших волноводных мод, распространяющихся в микроволноводах трапециевидного сечения, применяемых на практике. Продемонстрировано влияние поперечного сечения микроволновода на дисперсионные характеристики мод в зависимости от соотношения сторон, а также от отношения значений диэлектрических проницаемостей сердцевины микроволновода и его оболочки. Показана необходимость учета влияния формы микроволновода на дисперсионные характеристики мод в широком диапазоне значений рабочих длин волн и при различных распределениях диэлектрической проницаемости волноведущей структуры.</p></abstract><trans-abstract xml:lang="en"><p>A method for analysis of dispersion characteristics of guided optical modes propagating in the optical waveguides with small cross-sections is proposed. The method is based on introduction of a correction factor for a longitudinal wavenumber of propagating modes. The correction factor arises when a cross-section of the basic rectangular waveguide is subjected to perturbation. The electromagnetic field distributions along with the mode longitudinal wavenumber are found by means of variable separation method. The longitudinal wavenumber correction factor is analytically calculated in terms of coupled mode theory. The combined use of the complete set of equations of electrodynamics together with the concept of effective sources gives rise to the correction factor in the form of an intermodal coupling coefficient. It is pointed out that the coupling coefficient consists of two components, namely bulk and surface, owing to accurate account of the electrodynamics boundary conditions. Using the method proposed, the dispersion characteristics of the fundamental modes propagating in the practically employed optical waveguides having a trapezoidal cross-section are calculated. An impact of the waveguide cross-section shape to cladding dielectric constant ratio on the mode dispersion characteristics is analyzed. The necessity to take into consideration an imperfection of the waveguide cross-section in a wide range of operating wavelengths is demonstrated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оптические волноводы</kwd><kwd>интегральная оптика</kwd><kwd>радиофотоника</kwd><kwd>теория связанных мод</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Optical Waveguides</kwd><kwd>Integral Optics</kwd><kwd>Microwave Photonics</kwd><kwd>Coupled-Mode Theory</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">Capmany J., Novak D. Microwave Photonics Combines Two Worlds // Nature Photonics. 2007. Vol. 1. P. 319–330. doi: 10.1038/nphoton.2007.89.</mixed-citation><mixed-citation xml:lang="en">Capmany J., Novak D. Microwave Photonics Combines Two Worlds. 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