Understanding profile-induced group-delay ripple in Bragg gratings.
Understanding profile-induced group-delay ripple in Bragg gratings.
复制标题
了解布拉格光栅中轮廓引起的群延迟纹波。
作者：
L. Poladian
分析了啁啾布拉格光栅的群延迟纹波与离化曲线的关系。用不连续反射、带隙反射和空腔光程长度的概念，给出了偏离理想线性群延迟的简单物理解释。定量表达式的振幅，相位和周期的快速和缓慢的分量纹波。
The relationship between group-delay ripple and the apodization profile of chirped Bragg gratings is analyzed. Simple physical explanations are given for departures from ideal linear group delay by use of only the concepts of reflection at discontinuities and band gaps and the optical path lengths of cavities. Quantitative expressions are obtained for the amplitudes, phases, and periods of both the fast and slow components of the ripple.