The invention discloses a low-loss bending-resistant hollow-core anti-
resonance optical fiber applied to 980nm pump light, and relates to the technical field of
optical fiber lasers, and the low-loss bending-resistant hollow-core anti-
resonance optical fiber sequentially comprises an outer cladding, an inner cladding and a
fiber core from outside to inside; the inner cladding is an anti-
resonance area, the inner cladding comprises four anti-resonance units, and each anti-resonance unit comprises a circular
dielectric tube of a nested structure and a fan-shaped
dielectric tube of a non-nested structure; the circular medium
pipe comprises a first-class circular medium
pipe, and a second-class circular medium
pipe and three third-class circular medium pipes are nested in the first-class circular medium pipe. The multi-layer nested circular
dielectric tube structure and the non-nested fan-shaped
dielectric tube structure are combined, so that the
transmission loss of optical signals is remarkably reduced, the transmission of the optical signals is more stable, the scattering and leakage of energy are reduced, and meanwhile, the efficient
optical energy transmission is ensured; in addition, the structure provides more flexibility in the
machining and manufacturing process, and
batch production is facilitated.