A robust continuous-time multi-dithering technique for laser communications using adaptive optics

A robust system architecture to achieve optical coherency free optimization. Several methods that had been proposed in the in multiple-beam free-space laser communication links with adaptive past, such as multi-dithering [4] and sequential perturbations [8], optics is introduced. It is based on deterministic multi-dithering and as well as the recently proposed stochastic parallel gradient descent gradient descent flows and accounts for phase delays in the dither signal, during propagation in the atmosphere, as well as saturation of the optical [5] and decoupled stochastic parallel gradient descent [2] methods phase shifters. The architecture has been mathematically analyzed and seem very promising and can potentially enhance the quality of laser simulation results of a VLSI implementation of the architecture are communications. presented and found in agreement with the theoretical model. The purpose of the present work is to propose a system architecture that can implement the multi-di...

• Type: Conference
• Year: 2006
• Where: ISCAS
• Authors: Dimitrios N. Loizos, Paul-Peter Sotiriadis, Gert Cauwenberghs
• Keywords: Gradient Descent, ISCAS 2006, Laser Communications, Parallel Gradient Descent