We examined the fiber-fuse propagation characteristics in hole-assisted fibers (HAFs) when the diameter of an inscribed circle linking the air holes was almost the same as the diameter of the melted area caused by the fiber fuse. We observed a new propagation mode for the fiber fuse in HAF with a damage track whose period was approximately 30 times longer than that in conventional single-mode fiber. We also made the first observation of a new threshold power (upper threshold) for the fiber fuse.
© 2010 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: March 3, 2010
Revised Manuscript: May 17, 2010
Manuscript Accepted: May 19, 2010
Published: June 8, 2010
Nobutomo Hanzawa, Kenji Kurokawa, Kyozo Tsujikawa, Katsuhiro Takenaga, Shoji Tanigawa, Shoichiro Matsuo, and Shigeru Tomita, "Observation of a propagation mode of a fiber fuse with a long-period damage track in hole-assisted fiber," Opt. Lett. 35, 2004-2006 (2010)