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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">izmertech-289</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>РАДИОТЕХНИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RADIO MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Методика оценки отношения сигнал-шум в волоконно-оптических системах передачи с частотным разделением каналов</article-title><trans-title-group xml:lang="en"><trans-title></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>Варданян</surname><given-names>В. А.</given-names></name></name-alternatives><email xlink:type="simple">vardgesvardanyan@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Сибирский государственный университет телекоммуникаций и информатики</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>07</day><month>02</month><year>2023</year></pub-date><volume>0</volume><issue>7</issue><fpage>53</fpage><lpage>57</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Варданян В.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Варданян В.А.</copyright-holder><copyright-holder xml:lang="en">Варданян В.А.</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://www.izmt.ru/jour/article/view/289">https://www.izmt.ru/jour/article/view/289</self-uri><abstract><p>Предложена методика оценки отношения сигнал-шум в волоконно-оптических системах передачи со спектральным уплотнением, уплотнением ортогональных и неортогональных поднесущих каналов при перекрестных помехах между каналами из-за четырёхволнового смешения в волокне. Показано, что оценить отношение сигнал-шум системы с любым количеством поднесущих каналов можно по результатам измерений этого отношения для четырёхканальной системы передачи.</p></abstract><trans-abstract xml:lang="en"><p>The procedure of estimating optical signal to noise ratio (OSNR) in optical fiber transmission systems with spectral multiplexing, using orthogonal and not orthogonal subcarriers multiplexing with domination of four-wave mixing effects was offered. The technique is based on measuring the OSNR for four-channel signal transmission system which is used to predict OSNR for M-channel transmission system.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оптическое отношение сигнал-шум</kwd><kwd>четырёхволновое смешение</kwd><kwd>поднесущие каналы</kwd><kwd>frequency division multiplexing</kwd><kwd>optical signal to noise ratio</kwd><kwd>four-wave mixing</kwd><kwd>subcarriers</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">ITU-T Recommendation G.694.1. Spectral grids for WDM applications: DWDM frequency grid.</mixed-citation><mixed-citation xml:lang="en">ITU-T Recommendation G.694.1. Spectral grids for WDM applications: DWDM frequency grid.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Gutierrez F. A., Perry P., Smyth F., Ellis A. 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