title: Fabrication and characterization of infrared hollow fiber with multi- SiO(2) and AgI inner-coating layers.
abstract: We report the transmission characteristics of infrared hollow fiber with multi- AgI and SiO(2) inner-coating layers in the mid-infrared region. A three-dielectric-layer hollow glass fiber with a SiO(2)-AgI-SiO(2)-Ag structure was fabricated and low-loss property was obtained in the mid-infrared region. The SiO(2) films were coated by use of the liquid-phase coating method and a semi-inorganic polymer was used as the coating material. For deposition of the AgI film between the two SiO(2) films, a silver film was first plated by use of the silver mirror reaction method. Then the iodination process was conducted to turn the silver layer into silver iodide. A calculation method was also developed to estimate the film thickness of dielectric layers in each fabrication step according to the position of loss peaks in the measured loss spectra. Good agreement between calculated and measured loss spectra was demonstrated by taking into consideration material dispersion and surface roughness of inner-coating films.
authors.affiliation: Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Lin
authors.forename: Yi-Wei
authors.initials: YW
authors.lastname: Shi
authors.forename: Ke-Rong
authors.initials: KR
authors.lastname: Sui
authors.forename: Xiao-Song
authors.initials: XS
authors.lastname: Zhu
authors.forename: Katsumasa
authors.initials: K
authors.lastname: Iwai
authors.forename: Mitsunobu
authors.initials: M
authors.lastname: Miyagi
mesh_terms: D004867:Equipment Design; D005336:Fiber Optic Technology; D007259:Infrared Rays; D007454:Iodides; D008962:Models, Theoretical; D055100:Optical Fibers; D012822:Silicon Dioxide; D012834:Silver; D018030:Silver Compounds
chemical_list: D007454:Iodides; D018030:Silver Compounds; D012834:Silver; D012822:Silicon Dioxide; C030584:silver iodide