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Proceedings Paper

Long-period fiber grating fabricated by focused irradiation of femtosecond laser pulses
Author(s): Yuki Kondo; Kentaro Nouchi; Tsuneo Mitsuyu; Masaru Watanabe; Peter G. Kazansky; Kazuyuki Hirao
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Paper Abstract

We have fabricated long-period fiber grating by focused irradiation of femtosecond laser pulses at 800 nm. The examined glass fiber is a non-H2-loaded standard single mode fiber for telecommunication. We have found that, after focused irradiation of femtosecond pulses, refractive index at the focal point increases. We examine a thermal stability of the fabricated fiber gratings. Values of the loss peak wavelength and the transmittance of the fiber gratings after heat treatment below 500 degrees Celsius are the same as initial values before heat treatment. The fiber gratings fabricated by focused irradiation of femtosecond pulses at 800 nm have higher resistance to a thermal decay compared with those of UV-induced long-period fiber gratings. We discuss the mechanism of index change. We have proposed that this technique is useful for fabrication of long-period fiber gratings with a superior aging characteristic.

Paper Details

Date Published: 26 November 1999
PDF: 8 pages
Proc. SPIE 3847, Optical Devices for Fiber Communication, (26 November 1999); doi: 10.1117/12.371263
Show Author Affiliations
Yuki Kondo, Japan Science and Technology Corp. (Japan)
Kentaro Nouchi, Japan Science and Technology Corp. (Japan)
Tsuneo Mitsuyu, Japan Science and Technology Corp. (Japan)
Masaru Watanabe, Showa Electric Wire & Cable Co., Ltd. (Japan)
Peter G. Kazansky, Univ. of Southampton (United Kingdom)
Kazuyuki Hirao, Japan Science and Technology Corp. and Kyoto Univ. (Japan)


Published in SPIE Proceedings Vol. 3847:
Optical Devices for Fiber Communication
Michel J. F. Digonnet, Editor(s)

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