title: Optimal design for hollow fiber inner-coated by dielectric layers with surface roughness.
abstract: We report the optimal design for hollow fiber inner-coated with metallic and multidielectric layers by using ray-optics theory. Transmission characteristics of the multilayer hollow fiber are more dependent on the film surface roughness in the IR region. Comparisons of fibers with smooth and rough films are made and discussed in detail. The optimal design for film thickness, inner radius, and the number of layers and refractive indices is presented. The calculation results are important for structure design, material selection, and fabrication when considering imperfections in film-coating techniques. Multilayer fibers are fabricated based on the calculation and experimental results agree with the theoretical ones.
authors: School of Information Science and Engineering, Fudan University, Shanghai, China.
authors: Bang-Shan
authors: BS
authors: Sun
authors: Xiao-Li
authors: XL
authors: Tang
authors: Yi-Wei
authors: YW
authors: Shi
authors: Katsumasa
authors: K
authors: Iwai
authors: Mitsunobu
authors: M
authors: Miyagi