| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a temperature distribution measuring instrument having increased SN ratio while suppressing the light output of a light source, and improved temperature measuring precision. SOLUTION: This measuring instrument comprises the light source for emitting a pulse light, a sensor optical fiber for receiving the incidence of the pulse light to generate a backward scattered light, and an optical wave divider for dividing and guiding the backward scattered light to a light receiver. The optical wave divider is constituted so as to guide both anti-Stokes light and Stokes light to the light receiver.</p> |
