OPTICAL AMPLIFYING DEVICE AND OPTICAL COMMUNICATION SYSTEM

摘要

The present invention relates to an optical amplifying apparatus and a complex optical amplifying apparatus which compensate a loss as a function of wavelength of an optical transmission line by a gain as a function of wavelength, and further relates to an optical communication system which includes apparatuses such as an optical transmitting apparatus, an optical repeating apparatus, and an optical receiving apparatus. The above apparatuses and the optical communication system make it possible to broaden a wavelength band and lengthen a transmission distance.