The definition and use of fiber Bragg grating sensors

FBG sensors sensing process is modulated by external parameters on the Prague center wavelength pass to get emotional interest , which is a wavelength modulation type optical fiber Shaft Position Sensor, FBG sensors should therefore belong in a special class of optical fiber sensors . Currently fiber grating and its application in optical fiber sensors and optical fiber communications caused widespread concern.FBG sensors can directly measure temperature , strain and other physical quantities . As the fiber grating wavelength sensitive to temperature and strain simultaneously , namely temperature and strain caused by the fiber grating coupler wavelength while moving , making it impossible to distinguish between temperature and strain by measuring the wavelength of the fiber grating coupler move .FBG Car Temperature Sensor have immunity to electromagnetic interference , signal bandwidth , high sensitivity , ease of reuse, light weight, and so is suitable for use in high temperature, corrosive hazardous environments advantages. Since 1989 the United States Morey , who first studied strain and temperature sensor FBG conducted since the world are very concerned and carried out its extensive applied research, in just 10 years time has become the FBG sensor field development fastest growing technology and success in many fields of application , FBG sensors have a very wide range of applications in large-scale construction and safety monitoring wells and other special occasions.