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Proceedings Paper

Damage threshold of acrylic polymer jackets surrounded with optical fiber by UV laser
Author(s): Yoshinari Maezono; Iwasa Yousuke; Kou Kurosawa; Masahito Katto; Atsushi Yokotani
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Paper Abstract

Fabrication technique of fiber Bragg gratings (FBG) sensors, which is used the measurement of distortions of large scale architectural structures, requires a skillful technique, and consequently the costing becomes a problem. The fabrication technique without removing a polymer jacket can realize much easier fabrication and the cheaper cost. We have investigated the laser damage threshold of jackets in order to realize such a fabrication technique. The 3rd and the 4th harmonics of repetitive Nd:YAG laser pulse were used as light sources. An optical fiber coated untinged polymer jackets is used as a sample. The numbers of the shots against the same sample position was varied from 1 to 1200. As a result, damage thresholds at the shot number of 1200 were 6.9 J/cm2 and 0.9 J/cm2 for the wavelength of 355 nm and 266 nm, respectively. These values are corresponding to intensity of 1.3 MW/cm2 and 0.3 MW/cm2, respectively. It is considered that the fabrication of FBG, which need a typical intensity of ~kW/cm2, without removing the jacket should be possible by controlling the laser intensity between this level and the threshold.

Paper Details

Date Published: 26 April 2007
PDF: 5 pages
Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63462O (26 April 2007); doi: 10.1117/12.739105
Show Author Affiliations
Yoshinari Maezono, JST Satellite Miyazaki, Science and Technology Agency (Japan)
Iwasa Yousuke, JST Satellite Miyazaki, Science and Technology Agency (Japan)
Kou Kurosawa, JST Satellite Miyazaki, Science and Technology Agency (Japan)
Masahito Katto, Univ. of Miyazaki (Japan)
Atsushi Yokotani, Univ. of Miyazaki (Japan)


Published in SPIE Proceedings Vol. 6346:
XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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