title: Compact grating couplers on silicon-on-insulator with reduced backreflection.
abstract: The backreflection in commonly used grating couplers on silicon-on-insulator (SOI) is not negligible for many applications. This reflection is dramatically reduced in our improved compact grating coupler design, which directs the reflection away from the input waveguide. Realized devices on SOI show that the reflection can be reduced down to -50 dB without an apparent transmission penalty.
authors.affiliation: Photonics Research Group, INTEC-department, Ghent University-IMEC, Ghent, Belgium. Yanlu.Li@intec.ugent.be
authors.forename: Yanlu
authors.initials: Y
authors.lastname: Li
authors.forename: Diedrik
authors.initials: D
authors.lastname: Vermeulen
authors.forename: Yannick
authors.initials: Y
authors.lastname: De Koninck
authors.forename: Gunay
authors.initials: G
authors.lastname: Yurtsever
authors.forename: Günther
authors.initials: G
authors.lastname: Roelkens
authors.forename: Roel
authors.initials: R
authors.lastname: Baets