D. John, J. Bauters, Joseph Nedy, Wenzao Li, R. Moreira, J. Barton, J. Bowers, D. Blumenthal
{"title":"Fabrication and demonstration of a pure silica-core waveguide utilizing a density-based index contrast","authors":"D. John, J. Bauters, Joseph Nedy, Wenzao Li, R. Moreira, J. Barton, J. Bowers, D. Blumenthal","doi":"10.1364/OFC.2011.OWS3","DOIUrl":null,"url":null,"abstract":"We report a novel approach for creating a dopant-free pure silica-core waveguide (PSCW) for chip-scale waveguides with the goal of reaching fiber-like losses on-chip. Stoichiometric silica films were used as both the cladding and core material for buried channel waveguides, with the required index contrast generated by a difference in physical density. The bulk densities of the thin-films were measured with X-Ray Reflectometry, and these density values were compared with the expected change in refractive index using the Lorentz-Lorenz (Clausius-Mosotti) relation. We found the difference in density of 5.29% to correspond with the difference in refractive index of 1.17%, and measured propagation losses of 2.119 to 2.660 dB/cm.","PeriodicalId":6373,"journal":{"name":"2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/OFC.2011.OWS3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
We report a novel approach for creating a dopant-free pure silica-core waveguide (PSCW) for chip-scale waveguides with the goal of reaching fiber-like losses on-chip. Stoichiometric silica films were used as both the cladding and core material for buried channel waveguides, with the required index contrast generated by a difference in physical density. The bulk densities of the thin-films were measured with X-Ray Reflectometry, and these density values were compared with the expected change in refractive index using the Lorentz-Lorenz (Clausius-Mosotti) relation. We found the difference in density of 5.29% to correspond with the difference in refractive index of 1.17%, and measured propagation losses of 2.119 to 2.660 dB/cm.