{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:08:23Z","timestamp":1760231303373,"version":"build-2065373602"},"reference-count":50,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2022,9,5]],"date-time":"2022-09-05T00:00:00Z","timestamp":1662336000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2019YFB1803700","20YFZCGX00440","2021SYS-04"],"award-info":[{"award-number":["2019YFB1803700","20YFZCGX00440","2021SYS-04"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Key Technologies R &amp; D Program of Tianjin","award":["2019YFB1803700","20YFZCGX00440","2021SYS-04"],"award-info":[{"award-number":["2019YFB1803700","20YFZCGX00440","2021SYS-04"]}]},{"name":"Shaanxi Key Laboratory of Deep Space Exploration Intelligent Information Technology","award":["2019YFB1803700","20YFZCGX00440","2021SYS-04"],"award-info":[{"award-number":["2019YFB1803700","20YFZCGX00440","2021SYS-04"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, we design a silica-cladded Germania-doped ring-core fiber (RCF) that supports orbital angular momentum (OAM) modes. By optimizing the fiber structure parameters, the RCF possesses a near-zero flat dispersion with a total variation of &lt;\u00b130 ps\/nm\/km over 1770 nm bandwidth from 1040 to 2810 nm for the OAM1,1 mode. A beyond-two-octave supercontinuum spectrum of the OAM1,1 mode is generated numerically by launching a 40 fs 120 kW pulse train centered at 1400 nm into a 12 cm long designed 50 mol% Ge-doped fiber, which covers 2130 nm bandwidth from 630 nm to 2760 nm at \u221240 dB of power level. This design can serve as an efficient way to extend the spectral coverage of beams carrying OAM modes for various applications.<\/jats:p>","DOI":"10.3390\/s22176699","type":"journal-article","created":{"date-parts":[[2022,9,8]],"date-time":"2022-09-08T04:18:32Z","timestamp":1662610712000},"page":"6699","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Over-Two-Octave Supercontinuum Generation of Light-Carrying Orbital Angular Momentum in Germania-Doped Ring-Core Fiber"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3971-0926","authenticated-orcid":false,"given":"Jian","family":"Yang","sequence":"first","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7876-5722","authenticated-orcid":false,"given":"Yingning","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1736-484X","authenticated-orcid":false,"given":"Yuxi","family":"Fang","sequence":"additional","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"given":"Wenpu","family":"Geng","sequence":"additional","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"given":"Wenqian","family":"Zhao","sequence":"additional","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"given":"Changjing","family":"Bao","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA"}]},{"given":"Yongxiong","family":"Ren","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA"}]},{"given":"Zhi","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"given":"Yange","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Modern Optics, Nankai University, Tianjin 300350, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2325-2254","authenticated-orcid":false,"given":"Zhongqi","family":"Pan","sequence":"additional","affiliation":[{"name":"Department of Electrical & Computer Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA"}]},{"given":"Yang","family":"Yue","sequence":"additional","affiliation":[{"name":"School of Information and Communications Engineering, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1545","DOI":"10.1126\/science.1237861","article-title":"Terabit-Scale Orbital Angular Momentum Mode Division Multiplexing in Fibers","volume":"340","author":"Bozinovic","year":"2013","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"488","DOI":"10.1038\/nphoton.2012.138","article-title":"Terabit free-space data transmission employing orbital angular momentum multiplexing","volume":"6","author":"Wang","year":"2012","journal-title":"Nat. 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