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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 24, Iss. 2 — Feb. 1, 2006
  • pp: 846–

Fiber Fuse Phenomenon in Triangular-Profile Single-Mode Optical Fibers

Yoshito Shuto, Shuichi Yanagi, Shuichiro Asakawa, Masaru Kobayashi, and Ryo Nagase

Journal of Lightwave Technology, Vol. 24, Issue 2, pp. 846- (2006)


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Abstract

The unsteady-state thermal conduction processes in triangular-profile (TP) optical fibers, which exhibited zero chromatic dispersion near 1.55 µm, were studied theoretically with the explicit finite-difference method (FDM). It was estimated that these fibers would exhibit a high-temperature optical absorption on the basis of the high-temperature loss-increase mechanism proposed for step-index (SI) optical fibers. The core-center temperature of the TP fibers changed suddenly and reached over 7×105 K when a 1.064-µm laser power of 1 W was inputted into the core layer heated at 2608 K. This rapid heating of the core initiated the"fiber fuse"phenomenon. The propagation rates of the fiber fuse, estimated at 1.064 µm, were in fairly good agreement with the experimentally determined values. It was found that the threshold powers for initiating the fiber fuse are linearly proportional to the roots of the effective core areas of both the SI and the TP optical fibers. This coincides the experimental result reported by Seo et al.

© 2006 IEEE

Citation
Yoshito Shuto, Shuichi Yanagi, Shuichiro Asakawa, Masaru Kobayashi, and Ryo Nagase, "Fiber Fuse Phenomenon in Triangular-Profile Single-Mode Optical Fibers," J. Lightwave Technol. 24, 846- (2006)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-24-2-846

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