关键词：电子信息；半导体；激光源；超速
摘 要：This chapter reviews recent technological progress in the development of ultrafast light sources for achieving small footprint and low-power consumption optical transceivers. The focus is on various important light sources, for example, directly modulated diode lasers with high optical-gain materials, low-chirp externally modulated diode lasers, and ultrafast diode lasers with new structure and modulation scheme. The coverage of the topics starts with an in-depth theoretical treatment of key characteristics and dependences, illustrates typical realizations of ultrafast diode lasers and integrated laser-modulators, and includes relevant operation and performance characteristics as well.