A preparation method of photonic crystal optical fiber preform and pipe arrangement equipment thereof

Abstract

The invention discloses a method for preparing a photonic crystal optical fiber prefabricated rod and a tube arrangement device thereof. In the method, firstly, hexagonal capillary tubes with a cladding structure of stacked photonic crystal optical fiber preformed rods arranged in hexagonal components are used, and the arranged capillary tubes The side length of the component ranges from 6mm to 50mm; then use capillary rods to fill the periphery of the hexagonal component, arrange the circular components to make the outer edge of the filled capillary component a circle, and fix it after filling. Transpose and arrange the hexagonal components and arrange the circular components, insert the arranged components into the casing as a whole, and finally combine the two ends of the preformed rods to burn and fix them. The method and the tube arrangement device of the invention are beneficial to the orderly and stable structure of the optical fiber in the preparation stage of the prefabricated rod, the variable range of the structure is large, and the capillary rod filling method is flexible and convenient. Before the casing is combined, it is bundled with the capillary rod, and the gap is filled in advance, which greatly improves the success rate of the preparation.

Description

technical field [0001] The invention belongs to the technical field of microstructured optical fibers, and in particular relates to a method for preparing a photonic crystal optical fiber prefabricated rod and a pipe arrangement device thereof. Background technique [0002] Photonic crystal refers to the periodic arrangement of two media with different optical scales in terms of material structure, and photonic crystal fiber is the most successful application of photonic crystal. In 1992, Russell et al. of the University of Bath proposed photonic crystal fiber for the first time. The structure of this fiber is uniformly distributed through-holes along the axial direction, and the cross-section of the fiber shows a periodic arrangement of air holes. Unlike conventional optical fibers, photonic crystal optical fibers are usually composed of a single quartz material, and their waveguide structure is flexible and adjustable, with many advantages, such as endless single-mode tran...

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Problems solved by technology

The two-dimensional Bragg structure distributed in the cladding limits the lateral transmission of light in certain wavelength bands, but the core is a large air hole, forming defects, and the light in this band is limited in the core for transmission without being transmitted from Leakage in the cladding, the light of this band forms a transmission band

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