Communications

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

[+] Author Affiliations
Jingzhi Wu

North University of China, National Key Laboratory for Electronic Measurement Technology, Department of Electronic Engineering, Taiyuan, Shanxi, China

Hui Li

Southwest Petroleum University, Graduate School, Chendu, Sichuan, China

Yangjun Li

North University of China, National Key Laboratory for Electronic Measurement Technology, Department of Electronic Engineering, Taiyuan, Shanxi, China

Opt. Eng. 46(1), 019701 (January 17, 2007). doi:10.1117/1.2431800
History: Received February 25, 2006; Revised May 11, 2006; Accepted June 11, 2006; Published January 17, 2007
Text Size: A A A

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.

Figures in this Article
© 2007 Society of Photo-Optical Instrumentation Engineers

Citation

Jingzhi Wu ; Hui Li and Yangjun Li
"Encoding information as orbital angular momentum states of light for wireless optical communications", Opt. Eng. 46(1), 019701 (January 17, 2007). ; http://dx.doi.org/10.1117/1.2431800


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.