{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T10:27:59Z","timestamp":1785407279200,"version":"3.56.0"},"reference-count":44,"publisher":"Optica Publishing Group","issue":"16","license":[{"start":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T00:00:00Z","timestamp":1779926400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T00:00:00Z","timestamp":1779926400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Appl. Opt."],"published-print":{"date-parts":[[2026,6,1]]},"abstract":"<jats:p>Supercontinuum (SC) generation with broad spectral coverage in the near-infrared (IR) and mid-IR ranges is critical for applications such as medical diagnostics, biomedical sensing, and optical coherence tomography. In this study, we demonstrate SC generation in a 10\u00a0cm lead\u2013bismuth\u2013gallate dual-core photonic crystal fiber (DC-PCF), where the structural symmetry ensures that the dispersion curves of all four supermode components are nearly identical. Using the generalized nonlinear Schr\u00f6dinger equation (GNSE), we analyze how pump wavelength, peak power, and pulse width influence the resulting SC spectra. Pumping at 1560\u00a0nm, within the normal dispersion regime, and with a peak power of 30\u00a0kW, produces a broadband SC spanning 1275.8\u20132475.8\u00a0nm (1200\u00a0nm bandwidth) at 30\u00a0dB. In contrast, pumping in the anomalous dispersion regime at 1950\u00a0nm with the same peak power yields an SC bandwidth of 2353\u00a0nm at 30\u00a0dB. This bandwidth increase, compared to those of a single-core PCF under identical conditions, results from enhanced nonlinear mixing and inter-core energy transfer, which are facilitated by the intermodal interference of the supermode components in the DC-PCF. The proposed DC-PCF can be fabricated using conventional stack-and-draw techniques, making it a promising candidate for the development of coherent SC light sources.<\/jats:p>","DOI":"10.1364\/ao.597306","type":"journal-article","created":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T16:00:07Z","timestamp":1778515207000},"page":"5610","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Mid-infrared supercontinuum generation in a dual-core photonic crystal fiber based on\u00a0lead\u2013bismuth\u2013gallate glass"],"prefix":"10.1364","volume":"65","author":[{"given":"Phuong Nguyen Thi","family":"Hong","sequence":"first","affiliation":[{"name":"Vinh University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5597-9610","authenticated-orcid":true,"given":"Hue Thi","family":"Nguyen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05dp8mg49","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lanh Chu","family":"Van","sequence":"additional","affiliation":[{"name":"Vinh University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8244-876X","authenticated-orcid":true,"given":"Hieu Van","family":"Le","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05dp8mg49","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,5,28]]},"reference":[{"key":"ao-65-16-5610-R1","doi-asserted-by":"publisher","first-page":"108898","DOI":"10.1016\/j.optlastec.2022.108898","type":"journal-article","volume":"158","author":"Li","year":"2023","journal-title":"Opt. 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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"}]}}