Constant-temperature constant-strain type fiber bragg grating standard device
A fiber grating and standard device technology, applied in the direction of instruments, etc., can solve the problems that the optical fiber grating sensor demodulator cannot be calibrated, and the changing mode is different, so as to achieve the effect of eliminating wavelength drift and eliminating influencing factors
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[0011] The following describes the specific implementation in conjunction with the drawings:
[0012] Such as figure 1 As shown, the constant temperature and strain type fiber grating standard device provided by the present invention includes: fiber grating (1), fixed sleeve (2), entrance flange, exit flange, temperature control substrate (3), semiconductor refrigeration sheet, Thermistor and control circuit. The fiber grating 1 is fixed in the fixed sleeve 2, and the fixed sleeve 2 mainly functions to protect the optical fiber and isolate strain, so that the fiber grating (1) works under a constant strain condition. The fixed sleeve (2), the thermistor and the semiconductor refrigeration sheet are fixed on the temperature control substrate (3). The resistance of the thermistor changes with the temperature, and the temperature information is fed back to the control circuit. The control circuit adjusts the semiconductor refrigeration chip to increase and decrease the temperature...
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