| Budget Amount *help |
¥203,840,000 (Direct Cost: ¥156,800,000、Indirect Cost: ¥47,040,000)
Fiscal Year 2013: ¥36,400,000 (Direct Cost: ¥28,000,000、Indirect Cost: ¥8,400,000)
Fiscal Year 2012: ¥36,400,000 (Direct Cost: ¥28,000,000、Indirect Cost: ¥8,400,000)
Fiscal Year 2011: ¥36,400,000 (Direct Cost: ¥28,000,000、Indirect Cost: ¥8,400,000)
Fiscal Year 2010: ¥41,600,000 (Direct Cost: ¥32,000,000、Indirect Cost: ¥9,600,000)
Fiscal Year 2009: ¥53,040,000 (Direct Cost: ¥40,800,000、Indirect Cost: ¥12,240,000)
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| Research Abstract |
Functions of original "optical correlation domain techniques" have been evolved, which realizes distributed sensing of properties along optical fibers, such as scattering, by manipulating interference characteristics by laser frequency modulation. By embedding the "fiber optic nerves" along structures, for example bridges, "structures that can feel pain" can be realized. Our techniques had demonstrated superior functions, such as mm resolution, kHz speed, and random accessibility. In this project, we have evolved the functions to realize simultaneous sensing of strain and temperature, high speed acquisition of whole distributed data, and high speed random accessibility. Spatial resolution, sensing range, and noise characteristics have also been improved. Multiplexing of short-length distributed sensors or fiber Bragg gratings has also been proposed and demonstrated. Applications, including structural health monitoring for aircrafts, have been studied to prove the applicability.
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