Optical Fiber Communications 4th Edition by Gerd Keiser

Exercise 8

Consider a connector in which the fibers have angled end faces and core refractive indices n 0 = 1.470, as shown in Fig. 5.23. Assume the gap s = 1 m and the face angle = 8°. The connector experiences no loss when the gap is filled with an index-matching material that has n 1 = 1.470. Thus, use the relationship
to plot the throughput loss with an air gap ( n 1 = 1.0 for air) as a function of wavelength for 700 nm 1 1800 nm.