Encoding information as orbital angular momentum states of light for wireless optical communications

Jingzhi Wu; Hui Li; Yangjun Li

doi:10.1117/1.2431800

1 January 2007 Encoding information as orbital angular momentum states of light for wireless optical communications

Jingzhi Wu, Hui Li, Yangjun Li

Author Affiliations +

Optical Engineering, Vol. 46, Issue 1, 019701 (January 2007). https://doi.org/10.1117/1.2431800

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.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Jingzhi Wu, Hui Li, and Yangjun Li "Encoding information as orbital angular momentum states of light for wireless optical communications," Optical Engineering 46(1), 019701 (1 January 2007). https://doi.org/10.1117/1.2431800

Published: 1 January 2007

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