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Paper Abstract and Keywords
Presentation 2014-02-28 14:25
Influence of gamma ray irradiation in reflection spectra of polarization-maintaining fiber Bragg gratings
Yota Shimabukuro, Hirohisa Yokota, Yoh Imai (Ibaraki Univ.) OFT2013-77 OPE2013-237 Link to ES Tech. Rep. Archives: OPE2013-237
Abstract (in Japanese) (See Japanese page) 
(in English) It is known that changes of optical characteristics are caused in optical fibers by irradiation of radiation such as gamma ray. It has been reported that a transmission loss and a modal birefringence change in a polarization-maintaining optical fiber due to irradiation of radiation. In this report, we proposed a method to obtain a modal birefringence change in a polarization-maintaining fiber by measuring the change of reflection spectrum in the polarization-maintaining fiber Bragg grating. The possibility of the method for radiation sensing applications was examined. PANDA fiber Bragg gratings (PANDA-FBGs) were fabricated, and gamma radiations with 1kGy and 10kGy were irradiated to PANDA-FBGs. It was found that both Bragg wavelengths corresponding to two polarization modes shifted to shorter wavelength. It was also confirmed that the modal birefringence in the PANDA fiber decreased by the irradiation of gamma radiation because the difference of Bragg wavelengths decreased after irradiation.
Keyword (in Japanese) (See Japanese page) 
(in English) polarization-maintaining optical fiber / modal birefringence / fiber Bragg grating / radiation sensing / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 447, OFT2013-77, pp. 121-124, Feb. 2014.
Paper # OFT2013-77 
Date of Issue 2014-02-20 (OFT, OPE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Download PDF OFT2013-77 OPE2013-237 Link to ES Tech. Rep. Archives: OPE2013-237

Conference Information
Committee OCS OPE OFT  
Conference Date 2014-02-27 - 2014-02-28 
Place (in Japanese) (See Japanese page) 
Place (in English) nest HOTEL Naha 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2014-02-OCS-OPE-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of gamma ray irradiation in reflection spectra of polarization-maintaining fiber Bragg gratings 
Sub Title (in English)  
Keyword(1) polarization-maintaining optical fiber  
Keyword(2) modal birefringence  
Keyword(3) fiber Bragg grating  
Keyword(4) radiation sensing  
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1st Author's Name Yota Shimabukuro  
1st Author's Affiliation Ibaraki University (Ibaraki Univ.)
2nd Author's Name Hirohisa Yokota  
2nd Author's Affiliation Ibaraki University (Ibaraki Univ.)
3rd Author's Name Yoh Imai  
3rd Author's Affiliation Ibaraki University (Ibaraki Univ.)
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Speaker Author-1 
Date Time 2014-02-28 14:25:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2013-77, OPE2013-237 
Volume (vol) vol.113 
Number (no) no.447(OFT), no.448(OPE) 
Page pp.121-124(OFT), pp.175-178(OPE) 
#Pages
Date of Issue 2014-02-20 (OFT, OPE) 


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