一道有关光学的计算题
问题描述：
一道有关光学的计算题
The refractive index of core and cladding for a 1km length single mode fiber is 1.47 and 1.45 respectively.The time taken for the light to travel in this fiber is
答
alright,i'm a little drunk now,but i can still answer your question:internal total reflection condition:n1sin p=n2 sin pi/2 ===> sin p=0.98639455782312925170068027210884total time = (L/sin p) /(c/n2) ...