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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">Last Mile</journal-id><journal-title-group><journal-title xml:lang="en">Last Mile</journal-title><trans-title-group xml:lang="ru"><trans-title>Первая миля</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2070-8963</issn><publisher><publisher-name xml:lang="en">Technosphera JSC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">643662</article-id><article-id pub-id-type="doi">10.22184/2070-8963.2024.124.8.62.66</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>WIRED COMMUNICATION</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ПРОВОДНАЯ СВЯЗЬ</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">Study of the influence of reflectometer pulses on coherent DWDM channels</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование влияния импульсов рефлектометра на когерентные DWDM-каналы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yakushin</surname><given-names>I. K.</given-names></name><name xml:lang="ru"><surname>Якушин</surname><given-names>И. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>инженер; студент физического факультета</p></bio><email>iakushin@t8.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Remizova</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Ремизова</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>руководитель</p></bio><email>iakushin@t8.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Samodelkin</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Самоделкин</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>инженер</p></bio><email>iakushin@t8.ru</email><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Starykh</surname><given-names>D. D.</given-names></name><name xml:lang="ru"><surname>Старых</surname><given-names>Д. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>заместитель начальника отдела</p></bio><email>iakushin@t8.ru</email><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nanii</surname><given-names>O. E.</given-names></name><name xml:lang="ru"><surname>Наний</surname><given-names>О. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>д.ф.-м.н., начальник научного отдела; проф.</p></bio><email>iakushin@t8.ru</email><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Treshchikov</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Трещиков</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>д.т.н., генеральный директор</p></bio><email>iakushin@t8.ru</email><xref ref-type="aff" rid="aff6"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">компания "Т8"</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="ru">МГУ имени М.В. Ломоносова</institution></aff><aff><institution xml:lang="en"></institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="ru">Группа компаний "Т8"</institution></aff><aff><institution xml:lang="en"></institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="ru">Компания "Т8"</institution></aff><aff><institution xml:lang="en"></institution></aff></aff-alternatives><aff id="aff5"><institution>МГУ имени М.В. Ломоносова</institution></aff><aff id="aff6"><institution>Компания "Т8"</institution></aff><pub-date date-type="pub" iso-8601-date="2024-12-24" publication-format="electronic"><day>24</day><month>12</month><year>2024</year></pub-date><issue>8</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>62</fpage><lpage>66</lpage><history><date date-type="received" iso-8601-date="2025-01-06"><day>06</day><month>01</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-01-06"><day>06</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Yakushin I.K., Remizova A.S., Samodelkin L.A., Starykh D.D., Nanii O.E., Treshchikov V.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Якушин И.К., Ремизова А.С., Самоделкин Л.А., Старых Д.Д., Наний О.Е., Трещиков В.Н.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Yakushin I.K., Remizova A.S., Samodelkin L.A., Starykh D.D., Nanii O.E., Treshchikov V.N.</copyright-holder><copyright-holder xml:lang="ru">Якушин И.К., Ремизова А.С., Самоделкин Л.А., Старых Д.Д., Наний О.Е., Трещиков В.Н.</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2070-8963/article/view/643662">https://journals.eco-vector.com/2070-8963/article/view/643662</self-uri><abstract xml:lang="en"><p>It is observed that the reflectometer pulse affects the accompanying DWDM signal due to the forced Raman scattering (FRS) effect. It is found that in coherent links it is important to consider both the attenuation of DWDM signal power and the rate at which this occurs, as both can cause short-term loss of traffic on the link. To take them into account, a dynamic model – an exact solution of the system of rate equations describing the DWDM interaction – was implemented.</p></abstract><trans-abstract xml:lang="ru"><p>Отмечается, что импульс рефлектометра влияет на попутный DWDM-сигнал за счет эффекта вынужденного комбинационного рассеяния (ВКР). Установлено, что в когерентных линиях связи важно учитывать как ослабление мощности сигнала DWDM, так и скорость, с которой это происходит, поскольку оба эти фактора могут вызвать кратковременную потерю трафика в линии связи. Для их учета была реализована динамическая модель – точное решение системы скоростных уравнений, описывающих ВКР-взаимодействие.</p></trans-abstract><kwd-group xml:lang="en"><kwd>fiber-opticlines</kwd><kwd>DWDM</kwd><kwd>optica lfiber reflectometry</kwd><kwd>stimulated Raman scattering</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>волоконно-оптические линии связи</kwd><kwd>DWDM</kwd><kwd>рефлектометрия оптических волокон</kwd><kwd>вынужденное комбинационное рассеяние</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Grinstein V. and Venter M. In-Service OTDR Monitoring and Mitigating the Effects of Raman Scattering [Электронный ресурс]. URL: https://www.lightwaveonline.com/test/network-test/article/16667976/in-service-otdr-monitoring-and-mitigating-the-effects-of-raman-scattering (дата обращения 03.12.2024).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Kjeldsen P.M., Obro M. et al. SRS induced depletion of 1540 nm signal co propagating with 1630 nm OTDR pulses // Electronics Letters. 1996. Vol. 32. No. 20. 1996. PP. 1914–1916.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Headley C., Agrawal G.P. Raman Amplification in Fiber Optical Communication Systems. Cambridge, MA: Academic Press, 2005. 374 p.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Самарский А.А. Введение в теорию разностных схем. М.: Наука, 1971. 552 с.</mixed-citation></ref></ref-list></back></article>
