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The micro-cantilever beam with a twin long period optic fiber grating sensitive to the strain and the vibration is designed to use as the sensor head.The micro-displacement of wavelength caused by strain or vibration is amplified in the system.Special cladding material is used to eliminate the interference brougth about the temperature.The designing structure is enabled to detect the micro-information.
The micro-cantilever beam with a twin long period optic fiber grating sensitive to the strain and the vibration is designed to use as the sensor head. Micro-displacement of the wavelength caused by strain or vibration is amplified in the system. Specially cladding material is used to eliminate the interference brougth about the temperature.The designing structure is enabled to detect the micro-information.