The following methodical instructions is about the first part of the discipline “Directed electric and optic communication systems”. Methodical instructions include laboratory works which devoted to the study of transmission parameters of communication lines and interference between them.

The following methodical guide is about section “Physics of optical communication” of physics course for telecommunications technician. Five stages allow students to learn basics of optical communications buildings and calculations techniques applied to determine main characteristics of four determinative elements of construction of fiber optical communication line. It contains sufficient theoretical information combined with examples of implementation of calculated work part.