title: Cavity formation on an optical nanofiber using focused ion beam milling technique.
abstract: We present the experimental realization of nanofiber Bragg grating (NFBG) by drilling periodic nano-grooves on a subwavelength-diameter silica fiber using focused ion beam milling technique. Using such NFBG structures we have realized nanofiber cavity systems. The typical finesse of such nanofiber cavity is F ∼ 20 - 120 and the on-resonance transmission is ∼ 30 - 80%. Moreover the structural symmetry of such NFBGs results in polarization-selective modes in the nanofiber cavity. Due to the strong confinement of the field in the guided mode, such a nanofiber cavity can become a promising workbench for cavity QED.
authors.affiliation: Center for Photonic Innovations, University of Electro-Communications, Tokyo, Japan.
authors.forename: K P
authors.initials: KP
authors.lastname: Nayak
authors.forename: Fam
authors.initials: F
authors.lastname: Le Kien
authors.forename: Y
authors.initials: Y
authors.lastname: Kawai
authors.forename: K
authors.initials: K
authors.lastname: Hakuta
authors.forename: K
authors.initials: K
authors.lastname: Nakajima
authors.forename: H T
authors.initials: HT
authors.lastname: Miyazaki
authors.forename: Y
authors.initials: Y
authors.lastname: Sugimoto