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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 pub-id-type="doi">10.31854/1813-324X-2021-7-1-6-19</article-id><article-id custom-type="elpub" pub-id-type="custom">tuzsut-148</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>ПРИБОРОСТРОЕНИЕ, МЕТРОЛОГИЯ И ИНФОРМАЦИОННО-ИЗМЕРИТЕЛЬНЫЕ ПРИБОРЫ И СИСТЕМЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INSTRUMENTATION, METROLOGY AND INFORMATION-MEASURING DEVICES AND SYSTEMS</subject></subj-group></article-categories><title-group><article-title>Исследование характеристик опытного образца маломодового оптического волокна  с увеличенной высотой ступенчатого профиля показателя преломления и наведенной киральностью</article-title><trans-title-group xml:lang="en"><trans-title>Researches of Parameters of Chiral Few-Mode Optical Fiber Pilot Sample with Improved Height  of Step Refractive Index Profile</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8737-5486</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурдин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bourdine</surname><given-names>A.</given-names></name></name-alternatives><email xlink:type="simple">bourdine@yandex.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>Барашкин</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Barashkin</surname><given-names>A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1723-9168</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурдин</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Burdin</surname><given-names>V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3919-4151</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дашков</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dashkov</surname><given-names>М.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2545-2487</contrib-id><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><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хохлов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khokhlov</surname><given-names>А.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тер-Нерсесянц</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ter-Nersesyants</surname><given-names>E.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8594-741X</contrib-id><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><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пчелкин</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pchelkin</surname><given-names>G.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1627-7499</contrib-id><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>Dukel’skii</surname><given-names>К.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евтушенко</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Evtushenko</surname><given-names>A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайцева</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaitseva</surname><given-names>Е.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5580-0035</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исмаил</surname><given-names>Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Ismail</surname><given-names>Ya.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-7"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Йин</surname><given-names>Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Yin</surname><given-names>Ju.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0276-0874</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузнецов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsov</surname><given-names>А.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4779-4656</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозов</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozov</surname><given-names>О.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0713-7806</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сахабутдинов</surname><given-names>А. Ж.</given-names></name><name name-style="western" xml:lang="en"><surname>Sakhabutdinov</surname><given-names>А.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8604-0913</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петруччионе</surname><given-names>Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Petruccione</surname><given-names>F.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-7"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0833-6815</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сингх</surname><given-names>Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Singh</surname><given-names>G.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-10"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тивари</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Tiwari</surname><given-names>М.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-10"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7498-5525</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джаньяни</surname><given-names>В.</given-names></name><name name-style="western" xml:lang="en"><surname>Janyani</surname><given-names>V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-10"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Поволжский государственный университет телекоммуникаций и информатики; Научно-производственное объединение Государственный оптический институт им. С.И. Вавилова; ООО «ОптоФайбер Лаб»; Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича<country>Россия</country></aff><aff xml:lang="en">Povolzhskiy State University of Telecommunications &amp; Informatics; Research and Production Association S.I. Vavilov State Optical Institute; OptoFiber Lab; The Bonch-Bruevich Saint-Petersburg State University of Telecommunications<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Поволжский государственный университет телекоммуникаций и информатики<country>Россия</country></aff><aff xml:lang="en">Povolzhskiy State University of Telecommunications &amp; Informatics<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><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-4"><aff xml:lang="ru">Научно-производственное объединение Государственный оптический институт им. С.И. Вавилова; Университет ИТМО<country>Россия</country></aff><aff xml:lang="en">Research and Production Association S.I. Vavilov State Optical Institute; ITMO University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru">Научно-производственное объединение Государственный оптический институт им. С.И. Вавилова; Санкт-Петербугский политехнический университет Петра Великого<country>Россия</country></aff><aff xml:lang="en">Research and Production Association S.I. Vavilov State Optical Institute; Peter the Great Saint Petersburg Polytechnic University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru">Научно-производственное объединение Государственный оптический институт им. С.И. Вавилова; Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича; Университет ИТМО<country>Россия</country></aff><aff xml:lang="en">Research and Production Association S.I. Vavilov State Optical Institute; The Bonch-Bruevich Saint-Petersburg State University of Telecommunications; ITMO University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru">Университет Квазулу-Натал<country>Южно-Африканская Республика</country></aff><aff xml:lang="en">University of KwaZulu-Natal<country>South Africa</country></aff></aff-alternatives><aff-alternatives id="aff-8"><aff xml:lang="ru">Научно-технический университет Китая<country>Китай</country></aff><aff xml:lang="en">University of Science and Technology of China<country>China</country></aff></aff-alternatives><aff-alternatives id="aff-9"><aff xml:lang="ru">Казанский национальный исследовательский технический университет им. А.Н. Туполева – КАИ<country>Россия</country></aff><aff xml:lang="en">Kazan National Research Technical University named after A.N. Tupolev ‒ KAI<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-10"><aff xml:lang="ru">Национальный технологический институт Малавии<country>Индия</country></aff><aff xml:lang="en">Malaviya National Institute of Technology<country>India</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>04</month><year>2021</year></pub-date><volume>7</volume><issue>1</issue><fpage>6</fpage><lpage>19</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бурдин А.В., Барашкин А.Ю., Бурдин В.А., Дашков М.В., Демидов В.В., Хохлов А.В., Тер-Нерсесянц Е.В., Матросова А.С., Пчелкин Г.А., Дукельский К.В., Евтушенко А.С., Зайцева Е.С., Исмаил Я., Йин Ю., Кузнецов А.А., Морозов О.Г., Сахабутдинов А.Ж., Петруччионе Ф., Сингх Г., Тивари М., Джаньяни В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Бурдин А.В., Барашкин А.Ю., Бурдин В.А., Дашков М.В., Демидов В.В., Хохлов А.В., Тер-Нерсесянц Е.В., Матросова А.С., Пчелкин Г.А., Дукельский К.В., Евтушенко А.С., Зайцева Е.С., Исмаил Я., Йин Ю., Кузнецов А.А., Морозов О.Г., Сахабутдинов А.Ж., Петруччионе Ф., Сингх Г., Тивари М., Джаньяни В.</copyright-holder><copyright-holder xml:lang="en">Bourdine A., Barashkin A., Burdin V., Dashkov М., Demidov V., Khokhlov А., Ter-Nersesyants E., Matrosova A., Pchelkin G., Dukel’skii К., Evtushenko A., Zaitseva Е., Ismail Y., Yin J., Kuznetsov А., Morozov О., Sakhabutdinov А., Petruccione F., Singh G., Tiwari М., Janyani V.</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/148">https://tuzs.sut.ru/jour/article/view/148</self-uri><abstract><p> В работе представлены результаты исследования характеристик изготовленных опытных образцов кирального маломодового оптического волокна с увеличенной высотой ступенчатого профиля показателя преломления. Рассмотрены вопросы выбора технологических параметров указанного маломодового волоконного световода на основании проведенных расчетов строгим численным и приближенным методами анализа описанной волноводной структуры. Приведены построенные спектральные характеристики дисперсионных параметров модового состава. Представлены результаты экспериментальных измерений профиля лазерного пучка в ближнем поле, а также спектрального и импульсного откликов оптических сигналов, возбуждаемых когерентными источниками оптического излучения. </p></abstract><trans-abstract xml:lang="en"><p>This work presents results of researhes of fabricated pilot sample of chiral few-mode optical fiber (FMF) with induced twisting of 10 and 66 revolutions per meter, core diameter 11 µm (that almost corresponds to standard singlemode optical fibers), typical “telecommuniction” cladding diameter 125 µm and improved height of step refractive index profile. Proposed few-mode optical fiber supports 4 guided modes over “C”-band. We considered design and selection of desired technological parameters, based on results of computations, performed by both rigorous and approximation methods. Spectral curves of dispersion parameters are reprented as well as results of experimental measurements near-field laser beam profile and spectral and pulse responces of laser-excited optical signals. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>маломодовое оптическое волокно</kwd><kwd>ступенчатый профиль показателя преломления</kwd><kwd>высота профиля</kwd><kwd>маломодовый режим</kwd><kwd>киральность</kwd><kwd>дифференциальная модовая задержка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>few-mode optical fiber</kwd><kwd>step refractive index profile</kwd><kwd>refractive index profile height</kwd><kwd>few-mode regime</kwd><kwd>chirality</kwd><kwd>differential mode delay</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа подготовлена при финансовой поддержке РФФИ, DST, NSFC и NRF в рамках научного проекта № 19-5780016 БРИКС_т.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Barlow A.J., Ramskov-Hansen J.J., Payne D.N. 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