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提出了两种简单的磁致伸缩调制型光纤Bragg光栅的温度补偿方法。利用磁场和磁致伸缩材料对光纤光栅的Bragg波长进行调制 ,将一对光纤光栅按特定的结构固定 ,使得磁致伸缩效应对两只光纤光栅的Bragg波长的调制效果相互叠加而温度的影响相互抵消。补偿后的磁场调制型光纤光栅温度在 2 2～ 80℃的范围内 ,波长变化仅为0 11nm ,其温度灵敏度是温度补偿前的 1 10。
Two simple temperature compensation methods for the magnetostrictive modulation type fiber Bragg grating are proposed. The magnetic field and magnetostrictive material are used to modulate the Bragg wavelength of the fiber grating, and a pair of fiber gratings are fixed according to a specific structure so that the magnetostriction effects the modulation effects of the Bragg wavelengths of the two fiber gratings overlap each other and the influence of temperature on each other offset. After compensation, the temperature of the magnetic field modulation fiber grating is in the range of 2 to 80 DEG C, the wavelength change is only 0 to 11 nm, and the temperature sensitivity thereof is 10 before the temperature compensation.