title: Enhanced light coupling in sub-wavelength single-mode silicon on insulator waveguides.
abstract: We report on NIR efficient end-coupling in single-mode silicon on insulator waveguides. Efficient coupling has been achieved using Polymer-Tipped Optical Fibers (PTOF) of adaptable radius of curvature (ROC). When compared with commercial micro lenses, systematic studies as a function of PTOF ROC, lead for subwavelength PTOF to a coupling factor enhancement as high as 2.5. This experimental behavior is clearly corroborated by radial FDTD simulations and an absolute coupling efficiency of about 50% is also estimated.
authors.affiliation: Laboratoire de Nanotechnologies et d'Instrumentation Optique, ICD, CNRS (FRE2848), Université de Technologie de Troyes, Troyes, France.
authors.forename: C
authors.initials: C
authors.lastname: Pang
authors.forename: F
authors.initials: F
authors.lastname: Gesuele
authors.forename: A
authors.initials: A
authors.lastname: Bruyant
authors.forename: S
authors.initials: S
authors.lastname: Blaize
authors.forename: G
authors.initials: G
authors.lastname: Lérondel
authors.forename: P
authors.initials: P
authors.lastname: Royer
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D012825:Silicon / Q000737:chemistry*; D014159:Transducers
chemical_list: D012825:Silicon