title: Fiber fuse effect in hollow optical fibers.
abstract: We examined nonlinear fiber fuse effect (FFE) in hollow optical fibers (HOFs) that consist of a central air hole surrounded by a high-index ring core and silica cladding. In contrast to conventional solid-core fibers, the HOF with a hole diameter of 4 μm showed high threshold power of 4 W, and resulted in unique tadpole-like voids in periodic arrays after the FFE. As the hole diameter increased to 6 μm, plasma propagation was suppressed within the distance of 1 mm inside of the HOF. Detailed comparisons were made in terms of threshold power, void formation, and penetration length.
authors.affiliation: Institute of Physics and Applied Physics, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea.
authors.forename: Woosung
authors.initials: W
authors.lastname: Ha
authors.forename: Yoonseob
authors.initials: Y
authors.lastname: Jeong
authors.forename: Kyunghwan
authors.initials: K
authors.lastname: Oh