Broadband Light Sources 1 Electronic equipment 1 Fiber Bragg grating (FBG) 1 Fiber Bragg gratings 1 Light sources 1 Liquid crystal display(LCD) 1 Liquid crystal displays 1 Measuring temperature 1 Optical Spectrum Analyzer (OSA) 1 Optical fibers 1 Optical spectrum analyzer 1 Physical parameters 1 Physical quantities 1 Sensing elements 1 Spectrum analyzers 1 Surrounding temperature Temperature sensors 1 Thermoelectric equipment 1 Thermometers 1