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 $4\mathrm{\mu m}$ showed high threshold power of $4\mathrm{W}$, and resulted in unique tadpole-like voids in periodic arrays after the FFE. As the hole diameter increased to $6\mathrm{\mu m}$, plasma propagation was suppressed within the distance of $1\mathrm{mm}$ inside of the HOF. Detailed comparisons were made in terms of threshold power, void formation, and penetration length.

© 2011 Optical Society of America

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