Optical Characteristics Measuring Apparatus Using Interrogation Optical Fiber Optical Fiber Sensor System Comprising the Same and Method for Measuring Optical Characteristics

摘要

The present invention relates to a system for measuring optical characteristics using an interfering optical fiber, comprising: a light source for emitting input light of a specific wavelength; a sensing unit for generating the signal light by a sensor whose optical characteristics are influenced by external environmental conditions; The measuring unit includes an optical coupler for distributing the signal light to two optical paths, and an interrogation fiber provided in one path through which the signal light travels, Wherein the interfering optical fiber linearly exhibits optical absorption in a region of a specific wavelength, detects a wavelength of the signal light moved in the sensing portion through the measurement of the optical intensity of the signal light, Is derived.