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			<titleStmt><title level='a'>Full-core antimony sulfide platform for reconfigurable on-chip photonics</title></titleStmt>
			<publicationStmt>
				<publisher>OPTICA</publisher>
				<date>11/06/2025</date>
			</publicationStmt>
			<sourceDesc>
				<bibl> 
					<idno type="par_id">10679097</idno>
					<idno type="doi">10.1364/OL.577678</idno>
					<title level='j'>Optics Letters</title>
<idno>0146-9592</idno>
<biblScope unit="volume">50</biblScope>
<biblScope unit="issue">22</biblScope>					

					<author>Vladimir Fedorov</author><author>Guli Gulinihali</author><author>Karl Johnson</author><author>Andrew Grieco</author><author>Yeshaiahu Fainman</author><author>Abdoulaye Ndao</author>
				</bibl>
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		<profileDesc>
			<abstract><ab><![CDATA[Chalcogenide phase-change materials exhibit large, reversible index shifts that promise nonvolatile, energy-efficient photonic technologies. Yet, current implementations either rely on ultrathin, lossy films integrated with passive Si/SiN waveguides, limiting index modulation, or exploit direct laser writing for localized switching, at the expense of strong optical confinement. Here we demonstrate an antimony trisulfide (Sb<sub>2</sub>S<sub>3</sub>) waveguide platform where the material itself forms the guiding core. The proposed architecture theoretically supports substantial modulation of both effective index and absorption, thereby providing a robust platform for the realization of reconfigurable and densely integrated photonic devices.]]></ab></abstract>
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