Universal controller for an optical amplifier

摘要

An amplifier characterized by gain and output power comprises: (i) at least one gain medium (110); (ii) at least one pump (194, 192) supplying optical power into the gain medium; and (iii) a controller (120) controlling the gain and the output power of the amplifier. The controller (120) includes a signal compression circuit (EGC Section) to cover a wide dynamic ranged for optical input and output signals, so that resolution for low optical signals is better than resolution for high optical signals.