Doped fiber amplifier (The typical representative: EDFA) Erbium-doped fiber amplifier (EDFA) is the most widely used fiber-optic amplifiers, mainly made of Erbium-doped fiber (EDF), pump light source, optical couplers, optical isolators, optical filters and other components.
Noun. 1. national income-the total value of all income in a nation (wages and profits and interest and rents and pension payments) during a given period (usually 1 yr).
ANSWER #12 of 12. The phrase annual income means how much money you have made in a year. It either refers to how much you made before taxes are taken out or after taxes are taken out. Gross annual income refers to how much you made at a job that year before taxes and other deductions are taken out. Net annual income is how much you made that year after all the deductions are taken out. Try these searches instead: