AI Article Synopsis
- The study introduces shape-invariant Bessel beams as a new option for free-space optical communications, specifically targeting orbital angular momentum (OAM).
- These beams, created using a phase-only element on a spatial light modulator, are designed to be long-range and self-healing.
- The research compares the performance of helical OAM beams with Bessel-like OAM beams in a 150 m outdoor optical link, revealing similar performance levels and analyzing the effects of link characteristics on modal cross-talk.
Article Abstract
We present an alternative orbital angular momentum (OAM) solution for free-space optical communications in the form of shape-invariant Bessel beams. We use a generalized approach for generating these long-range self-healing beams with a phase-only element encoded on a spatial light modulator and imbue them with OAM. We study the performance of helical OAM beams as well as these long-range Bessel-like OAM beams over a real-world outdoor optical link of 150 m and show comparable performance. In the process, we characterize the link and its impact on modal cross-talk.
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| http://dx.doi.org/10.1364/AO.58.004258 | DOI Listing |
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