Photonic crystal fiber, particularly a method for producing single mode fiber and photonic crystal fiber for infrared wavelength region

摘要

The present invention relates to a photonic crystal fiber, in particular a single mode fiber, for transmitting electromagnetic radiation in the infrared wavelength range above 1 m, in particular in the wavelength range from 1 m to 20 m, preferably in the wavelength range from 9 m to 12 m, The nick crystal fiber comprises a photoconductive hollow core, in particular a hollow core having a predetermined diameter D and a plurality of hollow bodies, in particular chalcogenide glasses, arranged around the photoconductive hollow core And a hollow tube. The invention is preferably such that the diameter D of the photoconductive hollow core is at least 20 m, preferably at least 50 m, particularly preferably at least 100 m, so that it is larger than the smallest wavelength to be transmitted, Preferably hollow bodies (10, 20) are arranged such that they are in the range from 100 m to 500 m, in particular from 150 m to 350 m, the attenuation on transmission of electromagnetic radiation is less than 2 dB / m Is preferably less than 1 dB / m, advantageously less than 0.3 dB / m, in particular less than 0.1 dB / m.