Title :
Exploiting the unique intensity gradient of an orbital-angular-momentum beam for accurate receiver alignment monitoring in a free-space communication link
Author :
Guodong Xie;Long Li;Yongxiong Ren;Yan Yan;Nisar Ahmed;Zhe Zhao;Zhe Wang;Nima Ashrafi;Solyman Ashrafi;Roger D. Linquist;Alan E. Willner
Author_Institution :
Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
Abstract :
We investigate a pointing and tracking approach for an OAM multiplexing free-space communication link based on the measurement of the intensity gradient of the received beam. The OAM intensity gradient-based approach may potentially improve the system´s tracking accuracy.
Keywords :
"Optical beams","Detectors","Laser beams","Receivers","Multiplexing","Arrays","Apertures"
Conference_Titel :
Optical Communication (ECOC), 2015 European Conference on
DOI :
10.1109/ECOC.2015.7341883
