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Optical Engineering

Encoding information as orbital angular momentum states of light for wireless optical communications
Author(s): Jingzhi Wu; Hui Li; Yangjun Li
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Paper Abstract

The issues of security and obstruction of line of sight are concerns of wireless optical communications (WOC). In this paper, an analysis of light beams carrying orbital angular momentum (OAM) used for WOC is undertaken. The basic description and conception of OAM of light are given. Encoding information both as the OAM states of a single light beam and as the spatial structure of the mixed light beams with OAM is discussed and compared. Using OAM to encode the data offers an inherent security enhancement. Mixed vortex fields with OAM possess a self-reconstruction property that is able to regenerate and to reconstruct their initial spatial distributions of the complex amplitude in the condition of obstruction of line of sight.

Paper Details

Date Published: 1 January 2007
PDF: 5 pages
Opt. Eng. 46(1) 019701 doi: 10.1117/1.2431800
Published in: Optical Engineering Volume 46, Issue 1
Show Author Affiliations
Jingzhi Wu, North Univ. of China (China)
Hui Li
Yangjun Li, North Univ. of China (China)

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