Q$8$ Illustrate with a sketch the following:

$-$ Implementation of BASK

$-$ Amplitude Modulation

$-$ The FDM process of the analog multiplexing

$-$ The process of interleaving $---$ Taking a group of bits from each input line for multiplexing

$-$ The Optical fiber performance between $2$ Axis $($loss db$/$km$)$ and wavelength $($nm$)$