Double-cladding anti-resonance hollow-core optical fiber and preparation method thereof

Abstract

The invention belongs to the technical field of optical fibers, and particularly relates to a double-cladding anti-resonance hollow-core optical fiber and a preparation method thereof. The anti-resonance hollow-core optical fiber comprises a first outer cladding layer, a second outer cladding layer and a capillary tube layer, wherein the first outer cladding defines the outer surface of an inner unclosed cladding, the second outer cladding is not closed, a micro-channel penetrating through the optical fiber is arranged on the second outer cladding, the second outer cladding layer is tightly connected with the first outer cladding layer and defines the inner surface of the inner unclosed cladding layer, the capillary tube layer is attached to the inner surface of the second outer cladding as an anti-resonance layer and defines a fiber core having an effective radius together with the second outer cladding, capillary tubes in the capillary tube layer are arranged at intervals, and an interval is formed between every two adjacent capillary tubes. According to the invention, the first outer cladding can effectively ensure the mechanical reliability of the optical fiber, and the second outer cladding has an unclosed structure, so that the post-processing complexity of the optical fiber can be greatly reduced, the performance of the optical fiber is improved, and the problems of loss characteristic and processing complexity of the existing anti-resonance hollow-core optical fiber are solved.

Description

Technical field [0001] The present invention belongs to the field of fiber optic technology, particularly relates to a dual-clad fiber and the anti-resonance method for preparing the hollow core. Background technique [0002] In recent years, the anti-resonant air core optical fiber has been widely studied and attention, which may be air-core fiber and an outer layer of capillary spacing silica cladding composition distribution, different from the band gap of the light guide mechanism to guide a conventional type of air-core bandgap fiber it is the use of anti-resonance theory is bound in the hollow core of the beam. Compared to a conventional air-core fibers, hollow waveguides such antiresonant has a simpler geometry, the advantages of good single-mode transmission, a wider transmission window and ultra-low transmission loss. [0003] Since the core hollow waveguides can be hollow to provide a stable long-range interaction of light with the channel medium, and the air proportion...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems of slow response speed, complex post-processing of optical fiber and high processing loss of the existing anti-resonant hollow-core optical fiber, the present invention proposes a double-clad anti-resonant hollow-core optical fiber and its preparation method

Images