Evaluation of channel capacities of OAM-based FSO link with real-time wavefront correction by adaptive optics

Ming Li, Milorad Cvijetic, Yuzuru Takashima, Zhongyuan Yu

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

We have evaluated the channel capacity of OAM-based FSO link under a strong atmospheric turbulence regime when adaptive optics (AO) are employed to correct the wavefront phase distortions of OAM modes. The turbulence is emulated by the Monte-Carlo phase screen method, which is validated by comparison with the theoretical phase structure function. Based on that, a closed-loop AO system with the capability of real-time correction is designed and validated. The simulation results show that the phase distortions of OAM modes induced by turbulence can be significantly compensated by the real-time correction of the properly designed AO. Furthermore, the crosstalk across channels is reduced drastically, while a substantial enhancement of channel capacity can be obtained when AO is deployed.

Original languageEnglish (US)
Pages (from-to)31337-31346
Number of pages10
JournalOptics Express
Volume22
Issue number25
DOIs
StatePublished - Dec 15 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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