BROADBAND FLAT GAIN OPTICAL AMPLIFIER

摘要

An optical amplifier that receives an optical signal at an input of the optical amplifier is arranged so that it amplifies the signal and then adjus ts the level of the amplified input signal to a predetermined level. The optical amplifier, which includes a filter to substantially decrease the wavelength dependence of the optical amplifier, then amplifies the adjusted signal and supplies the resulting signal to an output.