利用传输矩阵的方法,研究了在线偏振光输入的情况下,磁光纤光栅的透射谱特性。透射谱中存在两条尖锐谱线,谱线的间隔随外加轴向磁场强度的大小线性变化,可以用于磁光传感。并且进一步研究了Bragg波长和一级磁光系数对传感器的灵敏度和动态范围的影响,为设计性能较好的磁光传感器提供了理论依据。
The transmission spectrum of Magneto-Optic Fiber Bragg Gratings(MFBG)is investigated by using transfer matrix method,when the incident light is linearly polarized light,The results show that two sharp spectral lines in the transmission spectrum are directly proportional to the magnetization component in the propagating direction.This characteristic is of great use in magneto-optic sensitizing.The influences on the sensor s sensitivity and dynamic range by Bragg wavelengths and first order magneto optic coef...