Optical orbital angular momentum for optical communication and its measurements

Xi-zheng Ke; Hong Lv; Jing-zhi Wu; Shu-qiao Hu

doi:10.1117/12.835225

28 August 2009 Optical orbital angular momentum for optical communication and its measurements

Xi-zheng Ke, Hong Lv, Jing-zhi Wu, Shu-qiao Hu

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73825F (2009) https://doi.org/10.1117/12.835225
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

The beam with orbital angular momentum is a present domestic and foreign research key direction. Its application and development will bring the profound influence in the optical communications field. At the same time, light's orbital angular momentum promises potential applications in both classical and quantum optical communication. The research progress of the beam with orbital angular momentum and encoding information as light's OAM for free-space optical communication were reviewed in this article, the existing design method, mechanism and description methods of encoding information as light's OAM were discussed. In quantum communication, qudits can be encoded in photons using their OAM for creating high-dimensional entanglement based on entangled photon pairs from SPDC. In this paper, light's OAM is used as information carrier for classical and quantum communication, which is promising to ensures the security of atmospheric laser communication, improves the density and precision of information transmission. It is apparent that an efficient way to measure the orbital angular momentum of individual photons and light beams with good efficiency would be of potentially great importance for optical communications and quantum information. In view of the above, the measurements of orbital angular momentum of individual photons and light beams are analyzed and discussed in detail.

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Xi-zheng Ke, Hong Lv, Jing-zhi Wu, and Shu-qiao Hu "Optical orbital angular momentum for optical communication and its measurements", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73825F (28 August 2009); https://doi.org/10.1117/12.835225

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KEYWORDS

Photons

Quantum communications

Optical communications

Computer programming

Computer generated holography

Holograms

Interferometers

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