2013 Fiscal Year Final Research Report
Precise simultaneous measurement of temperature and strain using FBG-FPI on high birefringence fiber and narrow-ranged wavelength-sweep
| Project/Area Number |
23760379
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Measurement engineering
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| Research Institution | 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群) |
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Principal Investigator |
WADA Astushi 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, 電気情報学群, 准教授 (40434021)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 光ファイバセンサ / 光ファイバブラッグレーティング / 温度計測 / ひずみ計測 |
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| Research Abstract |
A Fiber Bragg Gratings(FBG) have been used as a sensor head for measurement of temperature and static strain. However, a standard FBG sensor, which is constructed on single-mode fiber, cannot simultaneously measure both temperature and static strain since the sensor has cross-sensitivity between them. The cross-sensitivity problem can be solved by using an FBG constructed on a polarization maintaining fiber(PM-FBG) instead of a standard FBG. We have introduced an Fabry-Perot interferometer constructed with PM-FBG(PM-FBG-FPI) as a sensor head. This present us improvement on the sensing resolution for the simultaneous measurement of temperature and static strain.
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