High spatial resolution Brillouin reflectometry based on the product of delayed signals

• Project/Area Number: 25420418
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: Shibaura Institute of Technology
• Principal Investigator: HORIGUCHI TSUNEO 芝浦工業大学, 工学部, 教授 (70348902)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 計測工学 / スマートセンサ情報システム / リモートセンシング / 応用光学・量子光学 / 光ファイバセンサ / ブリルアン散乱 / 歪みセンサ / 温度センサ

Outline of Final Research Achievements

BOTDR is an optical fiber sensor for measuring distributed temperature and strain by utilizing the dependence of spontaneous Brillouin scattering frequency shift on them. In order to improve spatial resolution and frequency measurement accuracy for BOTDR, this study has proposed to employ phase-modulation pulse probe with and without pi-phase shift. This study has also proposed a new signal processing method based on multiplying delayed signals sampled with narrow- and wide-width window functions. Experiments have clarified that the proposed method is effective to improve the BOTDR performance

Research Products

• [Presentation] 相互相関に基づく高距離分解能BOTDR (2016)
  • Author(s): 笠原寛史
  • Organizer: 電子情報通信学会総合大会
  • Place of Presentation: 九州大学伊都キャンパス（福岡市）
  • Year and Date: 2016-03-15
• [Presentation] Coding techniques for distributed fiber sensors based on Brillouin scattering (2016)
  • Author(s): Tsuneo Horiguchi
  • Organizer: 6th International Conference on Photonics (ICP2016)
  • Place of Presentation: Hilton Kuching(Sarawak, Malaysia)
  • Year and Date: 2016-03-14
  • Int'l Joint Research / Invited
• [Presentation] Proposal and demonstration of high spatial resolution BOTDR by correlating signals sampled with narrow- and wide-width window functions (2016)
  • Author(s): Ryutaro Shibata
  • Organizer: 6th International Conference on Photonics (ICP2016)
  • Place of Presentation: Hilton Kuching(Sarawak, Malaysia)
  • Year and Date: 2016-03-14
  • Int'l Joint Research
• [Presentation] 高距離分解能 FFT-BOTDRの検討 (2015)
  • Author(s): 柴田龍太郎
  • Organizer: 第56回 光波センシング技術研究会
  • Place of Presentation: 東京理科大学森戸記念館（東京都）
  • Year and Date: 2015-12-08
• [Presentation] FFTを応用したBOTDRの周波数測定精度の検討 (2014)
  • Author(s): 笠原寛史，柴田龍太郎，堀口常雄
  • Organizer: 第54回光波センシング技術研究会
  • Place of Presentation: 東京理科大学森戸記念館（東京都）
  • Year and Date: 2014-12-09 – 2014-12-10
• [Remarks] research profile
  • URL: https://shibaura.pure.elsevier.com/en/persons/tsuneo-horiguchi
• [Remarks] SHIBAURA INSTITUTE OF TECHNOLOGY research profile
  • URL: http://www.experts.scival.com/shibaura/expert.asp?n=Tsuneo+Horiguchi&u_id=52&oe_id=1&o_id=11
• [Remarks] research profile
  • URL: http://www.experts.scival.com/shibaura/expert.asp?n=Tsuneo+Horiguchi&u_id=52&oe_id=1&o_id=6