TODOROKI, Shin-ichi

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Last Update : 2017/04/06
TODOROKI, Shin-ichi
Chief Researcher,  Colloidal Crystal Materials Group, RCFM,  National Institute for Materials Science
1-1 Namiki, Tsukuba, Ibaraki, 305-0044 JAPAN [Location]
Thumbnail abstract
Other Affiliation
Chief Researcher, Detection Technology Team, SIP-Social Infrastructure Materials Lab, RCSM
Research fields
Research fields Working on optical fibers exposed with high power laser beam.
Keywords Optical fiber engineering, Image analysis, Information management
Illustration showing (1) the ignition, (2) the propagation, and (3) the termination of a fiber fuse. A fiber fuse is initiated by the local heating of a single-mode optical fiber made of silica glass delivering a few watts of light, which generates an optical discharge running along the fiber to the light source at about 1 m/s (see my portrait). This is due to the temperature dependence of the light absorbance of silica glass, which increases rapidly beyond 1300 K and causes light-heat conversion that generates an optical discharge of several thousands of K. This results in the catastrophic destruction of the core region and the formation of periodic voids (see background photo, its interval is about 20 um.) and the damaged fiber no longer transports light.
Publications NIMS affiliated publications since 2004.
Research papers
  • S. Todoroki : “Quantitative evaluation of fiber fuse initiation with exposure to arc discharge provided by a fusion splicer” SCIENTIFIC REPORTS 6 (2016) 25366-1 DOI:10.1038/srep25366
  • 水野 洋輔, 田中 宏樹, 中村 健太郎, 林 寧生, 轟眞市 : “プラスチック光ファイバヒューズ現象の観測” 光アライアンス 27[5] (2016) 15-19
  • Mizuno Yosuke, Hayashi Neisei, Tanaka Hiroki, Nakamura Kentaro, S. Todoroki : “Polymer fiber fuse characterization propagation possibilities” Laser Focus World 51[3] (2015) 49-52
  • S. Todoroki : “Fiber Fuse -- Light-Induced Continuous Breakdown of Silica Glass Optical Fiber” NIMS MONOGRAPHS (2014) DOI:10.1007/978-4-431-54577-4
  • S. Todoroki : “Fiber fuse propagation behavior” Selected Topics on Optical Fiber Technology (2012) DOI:10.5772/26390
  • 轟眞市 : “光ファイバー” レアメタル便覧 (2011)
  • S. Todoroki : “Quantitative evaluation of fiber fuse initiation probability in typical single-mode fibers” Optical Fiber Communication Conference and Exposition Optics InfoBase Conference Papers (2015) W2A.33-W2A.33-3 DOI:10.1364/OFC.2015.W2A.33
  • M. Yosuke, H. Neisei, T. Hiroki, N. Kentaro, S. Todoroki : “First observation of fiber fuse phenomenon in polymer optical fibers” 23rd International Conference on Optical Fiber Sensors Proc. of SPIE 9157 (2014) 9157AI-1 DOI:10.1117/12.2058858
  • M. Yosuke, H. Neisei, T. Hiroki, N. Kentaro, S. Todoroki : “Understanding the propagation mechanism of plastic optical fiber fuse” OptoElectronics and Communication Conference 2014 Proceedings of OECC/ACOFT 2014 (2014) 670-672
Presentations, others
  • Dec. 12, 2015 : S. Todoroki : “Fiber fuse behavior veiled in its strong light emission” The 2nd International Workshop on Luminescent Materials 2015
  • Dec. 22, 2014 : 轟眞市 : “通信用光ファイバの光熱誘起損傷連鎖現象” 第11回レーザー学会「マイクロ固体フォトニクス」専門委員会
  • Nov. 21, 2014 : 轟眞市 : “光ファイバの光熱誘起損傷連鎖現象” 平成26年度NIMSイブニングセミナー「材料の安全性と信頼性」
  • No. 4035616 “光結合構造の作製方法および作製装置” (2007)
  • No. 3870270 “光ヒューズおよび光ヒューズ作製用部品” (2006)
  • 特許第3619873号 “ガラス複合体作製方法およびガラス複合体作製装置” (2004)
External references QR Code for this page
ResearcherID.COM (No.A-9922-2008)

Awards Young Scientists Award (1999, Ceramics Soc. Jpn.), CerSJ/ACS Joint Ceramic Award (2002)
Society membership The Ceramic Society of Japan, The Japan Society of Applied Physics
NIMS Researchers