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光子学报 2009
A Fiber Grating Dual-parameter Sensor of Ditrigon Cantilever Beam for Measurement of Strain and Temperature
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Abstract:
To solve the problem of cross sensitization when the strain and the temperature are measured at the same time,a structure of a ditrigon cantilever beam of uniform strength was presented,in which the strain and the temperature can measured at the same time by a single fiber grating.The beam is bended and elongate the grating sticked on the surface of the beam.The reflectance spectrum from the grating was splitted into a double-peak spectrum with pressure.The of double peaks can be measured by strain.The stra...