Using the Photonic-Bandgap effect

this paper designs a hollow-core Bragg fiber with its center wavelength of the transmission waveband at 10.6 μm with the semiconductor glass and organic polymer as the cladding material and analyzes the effects of the number of the radial cladding on the transmission loss of the fundamental mode HE11 by using COMSOL Multiphysics simulation tool

the results show that when the number increases to 20

the loss value falls to 0.051 4 dB/m

obviously better than 0.6 dB/m

the lowest value the ordinary sulfur compound fibers can reach.This kind of Bragg fiber can be applied to both medical high power CO2 laser transmission and long-distance infrared transmission.