Method used for array waveguide optical grating demodulating system temperature compensation in smart clothes
An arrayed waveguide grating and temperature compensation technology, which is applied in applications, medical science, sensors, etc., can solve the problems of complex structure and high cost, and achieve the effect of simple operation steps, low cost, and improved demodulation accuracy
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[0014] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.
[0015] The present invention considers that when the human body temperature is measured through the arrayed waveguide grating demodulation system in smart clothing, since the temperature difference between the left and right chest, left and right armpit and back of the human body is within the range of 1.7°C, the arrayed waveguide grating and the fiber Bragg grating The temperature change value ΔT of the sensor is integrated, so that the influence of temperature drift on the center wavelength of the output spectrum of each channel is converted into ΔT, and the center wavelength is replaced by a relational expression containing ΔT, and the temperature demodulation of the arrayed waveguide grating with temperature compensation is derived formula. The specific implementation steps are:
[0016] 1. Analyze the arrayed waveguid...
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