Abstract

High-speed directly modulated DFB lasers are attractive for high bit rate digital communications and for analog applications such as satellite antenna links and phased array radars. Factors affecting DFB bandwidth are photon density, differential optical gain, photon lifetime, damping factor and par- asitics. Recently, it has been predicted that the introduction of gain/loss into the otherwise index induced grating improves the dynamic behavior. However, most of the experimental results are based on lasers at 1.55 pm.^1-3 In this paper, very large bandwidth complex-coupled DFB lasers at 1.3 pm will be described.

© 1994 Optical Society of America