Optical Fiber Communications 4th Edition by Gerd Keiser

تمرين 6

Based on coupled-mode theory, the reflectivity of a fiber grating is given by 36
and
where
and
Here, = -p /= 2 n eff / -p/ , with being the grating period and p an integer. For values of KL = 1, 2, 3, and 4, plot R(L) as a function of L for the range -10 L 10. Note that R max is found by setting = 0.