论文信息 - Fiber-optic displacement sensor based on the DBR fiber laser

Fiber-optic displacement sensor based on the DBR fiber laser

The fiber-optic displacement sensor based on the distributed Bragg reflector fiber laser is proposed, that is, the fiber laser cavity is attached to the measured object, when the measured object is stretched or contracted, and the length of the fiber laser cavity is changing too. In view of nonlinearity of the fiber-optic displacement sensor, the calibration based on piezoelectric ceramics is applied to improve the linearity of the displacement sensor. Experiment results show that the fiber-optic displacement sensor has a linear response with the nominal working distance of 90 μm. Furthermore, the fiber-optic displacement sensor may realize the dynamic measurement.

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