Presentation 2011-08-26
Unusual wavelength shift in reflected light from a FBG doubted as an influence of radioactivity from Fukushima Reactor Damages
Kenta Shiraishi, Mai Karasawa, Ikumi Hirayama, Kisho Yamamoto, Ryuichi Mitsuhashi, Issei Sasaki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This report presents an unusual wavelength shit in the reflection from an optical fiber Bragg grating (FBG), which is radioactively exposed doubted as an influence of Fukushima power station accidents. Two FBG's with identical characteristics were prepared, one was left at the laboratory where far from the radioactive area and the other one was moved to a place near Fukushima prefecture. After that, the wavelength of reflection from the two FBG's were compared. Then we found not ignorable wavelength shift was found from radioactively exposed one, even no difference in the measurement conditions existed. According to continuous measurement of wavelength during few days, the wavelength shit seemed tend to recovery to the original position. These phenomena might cause of excess error or accident in the measurement or detection by using FBG and give us consequential wrong results. The authors would like to make alarming to the FBG users.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) FBG / FBG sensor / Radioactive contaminations
Paper # OFT2011-30
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Conference Information
Committee OFT
Conference Date 2011/8/18(1days)
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Paper Information
Registration To Optical Fiber Technology (OFT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Unusual wavelength shift in reflected light from a FBG doubted as an influence of radioactivity from Fukushima Reactor Damages
Sub Title (in English)
Keyword(1) FBG
Keyword(2) FBG sensor
Keyword(3) Radioactive contaminations
1st Author's Name Kenta Shiraishi
1st Author's Affiliation Hokkaido Institute of Technology()
2nd Author's Name Mai Karasawa
2nd Author's Affiliation Hokkaido Institute of Technology
3rd Author's Name Ikumi Hirayama
3rd Author's Affiliation Hokkaido Institute of Technology
4th Author's Name Kisho Yamamoto
4th Author's Affiliation Hokkaido Institute of Technology
5th Author's Name Ryuichi Mitsuhashi
5th Author's Affiliation Hokkaido Institute of Technology
6th Author's Name Issei Sasaki
6th Author's Affiliation Hokkaido Institute of Technology:Photonic Sensing Consortium for Safety and Security
Date 2011-08-26
Paper # OFT2011-30
Volume (vol) vol.111
Number (no) 182
Page pp.pp.-
#Pages 4
Date of Issue