title: Improving solid to hollow core transmission for integrated ARROW waveguides.
abstract: Optical sensing platforms based on anti-resonant reflecting optical waveguides (ARROWs) with hollow cores have been used for bioanalysis and atomic spectroscopy. These integrated platforms require that hollow waveguides interface with standard solid waveguides on the substrate to couple light into and out of test media. Previous designs required light at these interfaces to pass through the anti-resonant layers.We present a new ARROW design which coats the top and sides of the hollow core with only SiO2, allowing for high interface transmission between solid and hollow waveguides. The improvement in interface transmission with this design is demonstrated experimentally and increases from 35% to 79%. Given these parameters, higher optical throughputs are possible using single SiO2 coatings when hollow waveguides are shorter than 5.8 mm.
authors.affiliation: ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA.
authors.forename: Evan J
authors.initials: EJ
authors.lastname: Lunt
authors.forename: Philip
authors.initials: P
authors.lastname: Measor
authors.forename: Brian S
authors.initials: BS
authors.lastname: Phillips
authors.forename: Sergei
authors.initials: S
authors.lastname: Kühn
authors.forename: Holger
authors.initials: H
authors.lastname: Schmidt
authors.forename: Aaron R
authors.initials: AR
authors.lastname: Hawkins
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D055096:Optical Devices; D012542:Scattering, Radiation; D018511:Systems Integration