| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
|---|
| Outline of Final Research Achievements |
The purpose of this research is remote temperature sensing under long-term heating environment where humans have difficulty entering. A multipoint temperature sensor witch could sense high temperatures at multiple points remotely and simultaneously has been realized by cascading CO2-laser-induced LPFGs (Long Period Fiber Grating) in series. Furthermore, behaviors of the resonant wavelength and loss value at some loss peaks in a spectrum of the LPFG were investigated under high temperature environment for several hours. Quality keeping times of the LPFG as a high temperature sensor based on the behaviors were evaluated. Additionally, a new method, the double inscribing method using a CO2 laser, was proposed to make the loss spectrum of the LPFGs more suitable when constructing a multipoint temperature sensor using several the LPFGs. The relationship between grating pitch and parameters of the method was clarified to obtain suitable spectrum for the multipoint sensor
|
