Open AccessAntenna gain of actively compensated free-space optical communication systems under strong turbulence conditions
Author(s) -
Juan C. Juarez,
David M. Brown,
David W. Young
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.012551
Subject(s) - strehl ratio , turbulence , optics , free space optical communication , physics , adaptive optics , tilt (camera) , antenna (radio) , k epsilon turbulence model , compensation (psychology) , optical communication , computer science , mathematics , telecommunications , mechanics , geometry , psychology , psychoanalysis
Current Strehl ratio models for actively compensated free-space optical communications terminals do not accurately predict system performance under strong turbulence conditions as they are based on weak turbulence theory. For evaluation of compensated systems, we present an approach for simulating the Strehl ratio with both low-order (tip/tilt) and higher-order (adaptive optics) correction. Our simulation results are then compared to the published models and their range of turbulence validity is assessed. Finally, we propose a new Strehl ratio model and antenna gain equation that are valid for general turbulence conditions independent of the degree of compensation.