Orbital angular momentum transmission in time-varying scattering media using dual orthogonal polarization channels

Physics > Optics Title:Orbital angular momentum transmission in time-varying scattering media using dual orthogonal polarization channels View PDFAbstract:Orbital angular momentum (OAM) has been regarded as a potential dimension for optical communication and related fields. Despite several studies, the transmission of OAM beams through time-varying scattering media remains a challenge. In this paper, we report a method for OAM transmission through time-varying scattering media using dual orthogonal polarization channels, in which one channel carries a perfect vortex beam (PVB) carrying data, and the other serves as a reference plane wave. By calculating the second-order cross-correlation of speckle patterns generated by the PVB and the plane wave, the original data can be decoded. It is also shown that multiplexed PVBs carrying specific topological charges can produce interference patterns in the acquired cross-correlation images, thereby greatly enhancing transmission capacity. Experimental results show that the proposed method can transmit at least 6 bits per beam with 100% accuracy. Moreover, the proposed method is highly robust to variations in the receiving end's position in both radial and axial directions. The proposed method enables the practical deployment of OAM transmission in realistic optical communication and related applications. Current browse context: Bibliographic and Citation Tools Code, Data and Media Associated with this Article Demos Recommenders and Search Tools arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.