Open AccessDemonstration of a waveguide regime for a silica hollow - core microstructured optical fiber with a negative curvature of the core boundary in the spectral region > 35 μm
Author(s) -
Andrey D. Pryamikov,
A. S. Biriukov,
А. Ф. Косолапов,
В. Г. Плотниченко,
S. L. Semjonov,
E. M. Dianov
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.001441
Subject(s) - cladding (metalworking) , optics , curvature , materials science , core (optical fiber) , negative curvature , optical fiber , photonic crystal fiber , hard clad silica optical fiber , all silica fiber , laser , boundary value problem , multi mode optical fiber , physics , composite material , plastic optical fiber , geometry , mathematics , quantum mechanics
We present a numerical and experimental demonstration of a waveguide regime in a broad band spectral range for the hollow core microstructured optical fibers (HC MOFs) made of silica with a negative curvature of the core boundary. It is shown that HC MOFs with the cladding consisting only of one row of silica capillaries allows to guide light from the near to mid infrared despite of high material losses of silica in this spectral region. Such result can be obtained by a special arrangement of cladding capillaries which leads to a change in the sign of the core boundary curvature. The change in the sign of the core boundary curvature leads to a loss of simplicity of boundary conditions for core modes and to "localization" and limitation of their interaction with the cladding material in space. Such HC MOFs made of different materials can be potential candidates for solving problem of ultra high power transmission including transmission of CO and CO2 laser radiation.