研究并实现了一种应用于智能服装中人体温度测量的阵列波导光栅解调系统。 分析了系统的解调原理, 搭建了光纤布拉格光栅解调实验平台, 采用了强度法解调出光纤光栅的布拉格波长, 完成了光纤光栅传感器串联前后解调的实验。 结果表明, 系统对光纤布拉格光栅的布拉格波长的解调具有高线性度, 波长测量精度可达0.001 nm, 光纤布拉格光栅传感器间串扰所造成的解调误差为0.000 5 nm, 人体温度的测量误差为±0.16 ℃。 该解调系统精度高、 串扰低, 可适用于智能服装中人体温度的测量。

A system for demodulating distributed fiber Bragg grating sensors of the intelligent clothing was researched and realized, which is based on arrayed waveguide grating. The principle of demodulation method based on arrayed waveguide grating was analyzed, intensity-demodulating method was used to interrogate the wavelength of the fiber Bragg grating based on the building up of an experimental platform, and demodulation experiment of pre and post series of fiber Bragg grating was completed. The results show that the wavelength demodulation of the system has high linearity for fiber Bragg grating, the system gives a wavelength accuracy of 0.001 nm, and demodulation error caused by crosstalk between different sensors is 0.000 5 nm. The measurement error of human body temperature is ±0.16 ℃. It can be applied to the human body temperature measurement.