【摘要】 将啁啾相移光纤光栅看成一多层薄膜体系,每层膜用界面传输矩阵和膜层传输矩阵表示,将每层的传输矩阵相乘后得到相移光纤光栅的传输谱。数值计算结果表明传输谱的峰值和带宽取决于相移光纤光栅的啁啾系数、相移大小、位置及相移点的多少。该模型的精度满足设计要求。更多还原

【Abstract】 Chirped phase-shifted fiber grating is treated as a multiple-thin film stack, each film is represented by the interface T-matrix and layer T-matrix, the transmission spectrum of the grating is obtained by multiplying the T-matrix of each film. The numerical calculation results show that the maximum of transmission spectrum and bandwidth of phase-shifted fiber grating depends on chriped coefficient , position and value of the phase shifts in PSFB. This model’s accuracy can satisfy design demand.更多还原