| Budget Amount *help |
¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
Fiscal Year 2017: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2015: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Outline of Final Research Achievements |
In this research, we have aimed to develop and evaluated the optical fiber sensor system with multiple measurement points to establish fundamental technology for visualizing chemical parameters such as pH of seawater and other factors that may affecting ecosystems in the underwater environments including the deep-sea. As a result of this research, it has become possible to realize a multipoint optical fiber chemical sensor with a total length of about 90 m, which can simultaneously measure pH of 4 points at every 23 m by applying heterocore optical fiber technology. Furthermore, by combining the sensor fiber with the compact OTDR device, the underwater optical fiber cable, and the deployment device, it has become possible to construct a multipoint measurement optical fiber sensor system with a total length of 50 m every 10 m.
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