For fiber Bragg grating sensors, China has solved the fiber Bragg grating illumination technology. The current research focus is on the signal demodulation and analysis of the sensor network. Because the change of the fiber Bragg grating sensor is the wavelength, it is necessary to use a corresponding wavelength detector or optical spectrum analyzer to detect, or to accurately control the wavelength in the sensor network. For multi-channel sensor networks, in order to realize the processing of large sensor network data, some corresponding complex equipment must be used, but these equipment are usually expensive.
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