METHOD AND DEVICE OF MEASURING TEMPERATURE/DISTORTION OF OPTICAL FIBER

摘要

PROBLEM TO BE SOLVED: To provide a method and device of the temperature/distortion of an optical fiber capable of measuring the temperature/distortion of the optical fiber at high efficiency in a simple configuration. SOLUTION: The device of measuring the temperature/distortion of the optical fiber includes: a light source part 2 for emitting measurement light; the optical fiber 1 with holes in which the measurement light is incident on one end by having the three or more holes 13 formed along an optical axis direction on the circumference of a core region 11; a light/electric convertor 4 converted into an electric signal by being provided on the other end of the optical fiber with the holes, being generated in the optical fiber 1 with the holes and detecting a frontward Brillouin scattering light advancing in the same direction as the measurement light; and a spectrum analyzer 5 for displaying the frequency spectrum of an output signal output from the light/electric convertor 4. The device calculates the temperature or distortion of a medium, a space or the like by analyzing the obtained output signal. COPYRIGHT: (C)2008,JPO&INPIT