Effect of noise on Electro Absorption Modulator (EAM) and optimization — Used for optical communication

The noise transfer characteristics in an electro-absorption modulator are investigated. The transfer of intensity noise is assessed by considering the optical signal-to-noise ratio and relative intensity noise of the optical signals. An electro-absorption (EA) modulator is described from the viewpoint of noise transfer characteristics, where input optical signals are converted to electrical signals and the EA modulator is driven by the inversely amplified electrical signals. We have analyzed the linearity performance of analog fiber-optic links based on electro-absorption modulators (EAM) operating at high optical power. At substantially high optical power noise increases.