Optical Transmitter

Abstract

An optical transmitter of the present disclosure is obtained by integrating a DFB laser, an EA modulator, and SOAs, and intensity-modulated light from the EA modulator is optically amplified in the parallelized SOAs. The parallelized SOAs include a first MMI that splits the intensity-modulated light from the EA modulator toward two or more optical paths, corresponding SOAs that optically amplify the split light, and a second MMI that combines the optically amplified lights. The components of the optical transmitter are integrated on a single substrate. In the parallelized SOAs, it is possible to obtain a higher output power and an improved waveform quality, by applying a total SOA injection current that is the same as that of an optical transmitter of a conventional technology including a single SOA.

Dependencies are inferred from the claim text.