title: Conical and biconical ultra-high-Q optical-fiber nanowire microcoil resonator.
abstract: New 3D geometries of the optical nanowire microcoil resonator are suggested and investigated theoretically. The dependence of the Q factor on coupling parameters is calculated and compared for three different profiles. Results suggest that ultra-high-Q resonators can be fabricated more easily when the nanowire microcoil resonator has a biconical profile.
authors.affiliation: Optoelectronics Research Center, University of Southampton, Southampton, UK. fex@orc.soton.ac.uk
authors.forename: Fei
authors.initials: F
authors.lastname: Xu
authors.forename: Peter
authors.initials: P
authors.lastname: Horak
authors.forename: Gilberto
authors.initials: G
authors.lastname: Brambilla