2011 Fiscal Year Final Research Report
Development of a distributed fiber-optic chemical sensor device
| Project/Area Number |
21560442
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Yokohama National University |
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Principal Investigator |
OKAZAKI Shinji 横浜国立大学, 工学研究院, 准教授 (50293171)
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| Project Period (FY) |
2009 – 2011
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| Keywords | センシングデバイス / 広域モニタリング技術 / 水素センサ / 酸素センサ / エバネッセント波吸収 / 高屈折率光ファイバ / 分布計測 |
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| Research Abstract |
An evanescent-wave absorption type fiber-optic hydrogen gas sensor for distributed leakage monitoring was developed. A platinum-supported tungsten trioxide(Pt/WO_3) thin film as hydrogen sensitive material was successfully immobilized on periphery of bismuth based optical fiber by sol-gel method. In the presence of hydrogen, sharp sensor response based on the change in evanescent-wave absorption of sensing clad region was observed. Furthermore, reproducibility of the sensor with repeated exposure to hydrogen gas was good. Finally, multipoint sensing performance was demonstrated. These results indicate that the proposed sensor is promising for a low-cost and distributed leakage monitoring.
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