Consider the core of an optical fiber made from fuse quartz (n=1.30) with a diameter of 2.00μm surrounded by air.
a. What is the maximum angle θ, that light can enter the fiber and be trapped by total internal reflection?
b. Now consider the core to be surrounded by a cladding material with an index of refaction of n=1.30. What is the maximum angle θ, that light can enter the fiber and be trapped by total internal reflection?