Prisma II High Density EDFA Modules Installation Guide

ACDEGlossaryac, ACalternating current. An electric current that reverses its direction at regularly recurringintervals.AGCautomatic gain control. A process or means by which gain is automatically adjusted in aspecified manner as a function of input level or other specified parameters.CANcancel. The cancel character.dc, DCdirect current. An electric current flowing in one direction only and substantially constant invalue.DFB laserdistributed feedback laser. An injection laser diode that has a Bragg reflection grating in theactive region in order to suppress multiple longitudinal modes and enhance a singlelongitudinal mode.EDFAerbium doped fiber amplifier. Optical fibers doped with the rare earth element, erbium,which can amplify light in the 1550 nm region when pumped by an external light source.EIAElectronic Industries Association. A United States association that provides standards for usebetween manufacturers and purchasers of electronic products.EMCelectromagnetic compatibility. A measure of equipment tolerance to external electromagneticfields.78-4037880-01 Rev B 93