Optimal coherent beam combining based on Multi-Plane Light Conversion for high throughput optical feeder links
ICSOS Conference 2019
Section :
Aerospace and Defense
Publication date:
2020
Authors: Antonin Billaud,1 Fausto Gomez,1 David Allioux,1 Nicolas Laurenchet,1 Pu Jian,1 Olivier Pinel,1 Guillaume Labroille1
1Cailabs (France)
Abstract
To achieve Tb/s throughput in the near-infrared window that is required for FSO feeder-links, coherent beam combining appears as a promising candidate to increase output power of single-mode lasers. In this article, we demonstrate the use of an MPLC for coherent beam combining. Based on the unitary conversion we show that it is possible to perform a theoretically perfect combining. Using a supermode approach we propose several architectures to improve beam combining even when phase-locking is not perfect.