{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:46:00Z","timestamp":1785422760052,"version":"3.56.0"},"reference-count":15,"publisher":"Optica Publishing Group","issue":"13","license":[{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"name":"The National Key Scientific Instruments and Equipment Development Project of China","award":["62227819"],"award-info":[{"award-number":["62227819"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["U24B20169"],"award-info":[{"award-number":["U24B20169"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,7,1]]},"abstract":"<jats:p>\n                    Splice-loss evaluation in few-mode fibers (FMFs) usually requires mode-by-mode measurement of each guided mode, and the complexity of the measurement system and testing procedure increases with the number of supported modes. Although previous studies have established a unified mapping relationship between the splice losses of all guided modes and the parameter\n                    <jats:italic>d<\/jats:italic>\n                    \/\n                    <jats:italic>\u03c9<\/jats:italic>\n                    <jats:sub>0<\/jats:sub>\n                    , where\n                    <jats:italic>d<\/jats:italic>\n                    and\n                    <jats:italic>\u03c9<\/jats:italic>\n                    <jats:sub>0<\/jats:sub>\n                    denote the axial offset and fundamental-mode field radius, respectively, enabling the splice losses of all guided modes to be determined once this parameter is known, the practical application of this relationship remains limited because\n                    <jats:italic>d<\/jats:italic>\n                    \/\n                    <jats:italic>\u03c9<\/jats:italic>\n                    <jats:sub>0<\/jats:sub>\n                    is difficult to obtain directly. In this work, we propose a method for estimating\n                    <jats:italic>d<\/jats:italic>\n                    \/\n                    <jats:italic>\u03c9<\/jats:italic>\n                    <jats:sub>0<\/jats:sub>\n                    from the power drop at the splice point in the fundamental-mode backscattering trace. Using the estimated\n                    <jats:italic>d<\/jats:italic>\n                    \/\n                    <jats:italic>\u03c9<\/jats:italic>\n                    <jats:sub>0<\/jats:sub>\n                    , the splice losses of all guided modes can be further determined through the unified mapping relationship. Meanwhile, the fundamental-mode power drop can be converted into a decision threshold under a specified higher-order-mode loss requirement, thereby determining whether the splice loss satisfies the corresponding splice-quality requirement. The proposed method requires only a single fundamental-mode backscattering signal to achieve all-mode splice-loss estimation and splice-quality assessment, thereby providing a low-complexity solution for FMF splice-loss measurement.\n                  <\/jats:p>","DOI":"10.1364\/ol.605714","type":"journal-article","created":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T13:00:10Z","timestamp":1780923610000},"page":"3697","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["All-mode splice-loss estimation and splice-quality evaluation in few-mode fibers from a fundamental-mode power drop"],"prefix":"10.1364","volume":"51","author":[{"given":"Yi","family":"Qin","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00js3aw79","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenqi","family":"Ma","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00js3aw79","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiuquan","family":"Li","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00js3aw79","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guijun","family":"Hu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00js3aw79","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,6,26]]},"reference":[{"key":"ol-51-13-3697-R1","doi-asserted-by":"publisher","first-page":"1257","DOI":"10.1109\/JLT.2023.3327086","type":"journal-article","volume":"42","author":"Shibahara","year":"2024","journal-title":"J. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}