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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">bsuir</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады БГУИР</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady BGUIR</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7648</issn><issn pub-type="epub">2708-0382</issn><publisher><publisher-name>БГУИР</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35596/1729-7648-2021-19-4-80-84</article-id><article-id custom-type="elpub" pub-id-type="custom">bsuir-3111</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>ЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICS</subject></subj-group></article-categories><title-group><article-title>Схема поляризационного разнесения для масштабирования сети WDM/TDM GPON до 60 км с использованием полупроводниковых оптических усилителей на квантовых точках</article-title><trans-title-group xml:lang="en"><trans-title>Polarization diversity scheme for reach extension of WDM/TDM gigabit passive optical network up to 60 km using quantum dot semiconductor optical amplifiers</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>Тусупов</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Tussupov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докторант </p><p>г. Нур-Султан</p></bio><bio xml:lang="en"><p>Axmet D. Tussupov, Doctoral Candidate</p><p>Nur-Sultan</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тохметов</surname><given-names>А. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Tokhmetov</surname><given-names>A. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.ф.-м.н., доцент кафедры информационных систем </p><p>г. Нур-Султан</p></bio><bio xml:lang="en"><p>Akilbek T. Tokhmetov, PhD, Associate Professor at the Department of Information Systems</p><p>Nur-Sultan</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Листопад</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Listopad</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Листопад Николай Измаилович, д.т.н., профессор, заведующий кафедрой информационных радиотехнологий</p><p>220013, Республика Беларусь, г. Минск, ул. П. Бровки, 6тел. +375-17-239-23-04</p></bio><bio xml:lang="en"><p>Listopad Nikolai Izmailovich, D.Sc., Professor, Head of the Department of Information Radiotechnologies</p><p>220013, Republic of Belarus, Minsk, P. Brovka str., 6tel.: 375-17-239-23-04</p></bio><email xlink:type="simple">Listopad@bsuir.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Евразийский национальный университет им. Л.Н. Гумилева</institution></aff><aff xml:lang="en"><institution>L.N. Gumilyov Eurasian National University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>01</day><month>07</month><year>2021</year></pub-date><volume>19</volume><issue>4</issue><fpage>80</fpage><lpage>84</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тусупов А.Д., Тохметов А.Т., Листопад Н.И., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Тусупов А.Д., Тохметов А.Т., Листопад Н.И.</copyright-holder><copyright-holder xml:lang="en">Tussupov A.D., Tokhmetov A.T., Listopad N.I.</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://doklady.bsuir.by/jour/article/view/3111">https://doklady.bsuir.by/jour/article/view/3111</self-uri><abstract><p>Гигабитные пассивные оптические сети (GPON) являются наиболее передовой технологией: скорость передачи данных составляет 2,5 Гбит/с для нисходящих и 1,25 Гбит/с для восходящих потоков. Но данная архитектура сети имеет ограниченную физическую длину сети – примерно в 20 км. Это связано с высокими бюджетными потерями сети. Такое ограничение доступа делает сеть труднодоступной для абонентов, расположенных далеко от объектов телеком-оператора, а покрытие удаленных населенных пунктов является достаточно затратным (стоимость проектных работ, волокна, прокладки оптиволоконного кабеля), что усложняет устранение цифрового неравенства между городом, пригородом и сельской местностью. Для решения данной проблемы предлагается использование оптических усилителей с активной областью на квантовых точках (ППОУ-КТ), которые расширят зону досягаемости GPON до 60 км, что является пределом для логической длины по текущим протоколам. Одним из недостатков ППОУ-КТ является их поляризационная чувствительность. Для изменения состояния поляризации вышеназванных усилителей в данной работе предлагается схема поляризационного разнесения.</p></abstract><trans-abstract xml:lang="en"><p>Gigabit passive optical networks (GPON) are the most advanced technology. The data transfer rate is 2.5 Gbps for downstream and 1.25 Gbps for upstreams. But this network architecture has a limited physical network length of 20 km. This is due to the high budgetary losses of the network. This restriction of access makes the network difficult to access for subscribers located far from the facilities of the telecom operator, and coverage of remote settlements is quite costly (cost of design work, fiber, laying of fiber-optic cable), thereby complicating the elimination of the digital divide between the city, the suburbs and the countryside. To solve this problem, it is proposed to use quantum dot semiconductor optical amplifiers (QD-SOA), which will expand the GPON reach up to 60 km, which is the limit for the logical length under the current protocols. Quantum dot semiconductor optical amplifiers are promising devices for optical communication technology, but for commercial use they have one disadvantage. They are polarization sensitive. In this paper the authors constructed a polarization diversity scheme to avoid polarization sensitivity of QD-SOAs.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гигабитные пассивные оптические сети</kwd><kwd>оптические усилители с активной областью на квантовых точках</kwd><kwd>поляризационная чувствительность</kwd><kwd>схема поляризационного разнесения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gigabit passive optical networks</kwd><kwd>quantum dot semiconductor optical amplifiers</kwd><kwd>polarization sensitivity</kwd><kwd>polarization diversity scheme</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">Bonk R., Brenot R., Meuer C., Vallaitis T., Tussupov A., Rode J. 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