Mr. Masayuki Hamasaki Profile

Masayuki Hamasaki

at Soka Univ

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Proceedings Article | 30 January 2013 Paper

Hole drilling on glass optical fibers by a femtosecond laser

Masayuki Hamasaki, Kenji Gouya, Kazuhiro Watanabe

Proceedings Volume 8677, 86771S (2013) https://doi.org/10.1117/12.2010521

KEYWORDS: Sensors, Optical fibers, Gold, Fiber optics sensors, Near field, Laser drilling, Glasses, Fiber lasers, Near field optics, Thin films

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A novel optical fiber sensor has been developed for gaseous material detection by means of a femto-second laser which has ultrashort pulse and ultrahigh peak power. This sensor has attractive sensor potion consisted of drilling holes array which is machined on the glass optical fiber. Additionally, the sensor potion is coated with thin gold film. This work expects that an interaction could be induced between transmitted light through fiber core and a bottom of the drilled holes which reaches the fiber core. The interaction could induce near-field optical phenomenon excited by transmitted light through the fiber core. This scheme could make it possible to detect gaseous-material phase substances around the optical fiber. In this study, we found that localized surface plasmon (LSP) was excited by the transmitted light through the fiber core. This paper shows experiment to obtain optimum irradiation conditions and investigation for sensor principle for the development of a novel fiber sensor.

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