The imaging characteristics of a GRIN fiber lens with exponential variation of the constant-index surfaces are discussed based on the ray paths equations.
本文根据光线轨迹方程，讨论一种等折射率面为指数型变化的梯度折射率纤维透镜的成象特性。
2
Moreover, the expansion ratio of scale factor and the variation ratio of string coupling constant are calculated.
另外，计算了标度因子的膨胀比和弦耦合常数的变化比。
3
A small variation of the Verdet constant with temperature that was associated with the volume expansion of the sample was observed.