2015 Fiscal Year Final Research Report
High spatial resolution Brillouin reflectometry based on the product of delayed signals
| Project/Area Number |
25420418
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| 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 |
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| 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
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| Free Research Field |
計測工学
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