2011 Fiscal Year Final Research Report
Fiber laser sensing based on mechanically-induced long-period gratings
| Project/Area Number |
21560040
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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 |
Applied optics/Quantum optical engineering
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TOMIKI Masahiro 静岡大学, 工学部, 助教 (60362183)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 光ファイバ / レーザ工学 |
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| Research Abstract |
Pressure-induced long-period fiber gratings(LPFGs) were formed in fibers by three methods, i. e., mechanical pressure, UV-curable adhesive, and magnetic force. Although the LPFG is known as a band-rejection filter, the bandpass filter response was obtained by cladding-to-core modes conversion. By introducing the LPFG into the rare-earth. doped fiber laser resonator, tunable operation of the fiber lasers was attained. By using the change of the laser output power and the wavelength according to the circumstance of LPFG, simultaneous sensing of temperature and pressure was obtained from the laser output characteristics.
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