| 摘要 |
<p>PURPOSE:To enable measurement of an absolute temperature distribution of a fiber to be measured by providing a thermostatic device to keep a part of the fiber to be measured at a fixed temperature. CONSTITUTION:A thermostatic device such as Peltier element 8 provided in a fiber 4 to be measured keeps a part of the fiber 4 to be measured provided with the device at a known fixed temperature and serves as a reference temperature part 10 with respect to a change in temperature in a range other than the part. Then, a variation of intensity of an anti-Stokes light pertaining to a variation of temperature for a reference temperature is stored into a computer 7 at a desired point. The reference temperature is preferably a room temperature level of about 20-30 deg.. Thus, the intensity of the anti-Stokes light is compared with the reference temperature part 10 thereby enabling measuring of an absolute temperature distribution of the fiber 4 to be measured.</p> |
