Nonlinear Dynamics in Semiconductor Lasers 2023 - Abstract
Merghem, Kamel
The enormous growth of internet data traffic imposes new challenges for data centers and metro/access networks requiring the development of new advanced photonics components. Optical frequency combs have emerged as a promising approach towards compact and efficient light sources that provide a multitude of tones for parallel WDM transmission. In this talk, we start by introducing the concept of optical frequency combs and their wide variety of applications. To generate optical frequency combs, monolithic semiconductor passively mode-locked lasers are very attractive components. We will focus our talk on semiconductor based mode-locked lasers, especially quantum dot and quantum-dash based lasers with unique characteristics, such as broad gain bandwidth, low threshold current and enhanced temperature stability. To achieve the desired features for coherent communication systems, we have developed different stabilization schemes to improve both coherence and phase correlation between optical comb lines. We will conclude by demonstrating WDM coherent transmission with net data rates exceeding terabit/s transmission rates thanks to the implementation of resonant optical feedback based stabilization system.