| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2016: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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| Outline of Final Research Achievements |
We started this study with the aim of realizing high-speed and high-precision fiber optic sensing by using optical frequency comb that is composed of multiple modes with an equal frequency spacing. The proposed method can perform measurement in short time, because the Brillouin gain spectrum is measured without scanning the frequency of the light source. In addition to simultaneous measurement of Brillouin gain spectrum, the optical sensing based on multimode stimulated Brillouin scattering was demonstrated to be able to perform measurement with a sensitivity three orders higher than the conventional methods. We have also successfully demonstrated multi-point precision fiber optic measurement using fiber Bragg gratings, which is a spin-off of this study.
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