منابع مشابه
Free-space optical communications using orbital-angular-momentum multiplexing combined with MIMO-based spatial multiplexing.
We explore the potential of combining the advantages of multiple-input multiple-output (MIMO)-based spatial multiplexing with those of orbital angular momentum (OAM) multiplexing to increase the capacity of free-space optical (FSO) communications. We experimentally demonstrate an 80 Gbit/s FSO system with a 2×2 aperture architecture, in which each transmitter aperture contains two multiplexed d...
متن کاملTerabit-scale orbital angular momentum mode division multiplexing in fibers.
Internet data traffic capacity is rapidly reaching limits imposed by optical fiber nonlinear effects. Having almost exhausted available degrees of freedom to orthogonally multiplex data, the possibility is now being explored of using spatial modes of fibers to enhance data capacity. We demonstrate the viability of using the orbital angular momentum (OAM) of light to create orthogonal, spatially...
متن کاملHigh-speed acoustic communication by multiplexing orbital angular momentum.
Long-range acoustic communication is crucial to underwater applications such as collection of scientific data from benthic stations, ocean geology, and remote control of off-shore industrial activities. However, the transmission rate of acoustic communication is always limited by the narrow-frequency bandwidth of the acoustic waves because of the large attenuation for high-frequency sound in wa...
متن کاملHigh-capacity millimetre-wave communications with orbital angular momentum multiplexing
One property of electromagnetic waves that has been recently explored is the ability to multiplex multiple beams, such that each beam has a unique helical phase front. The amount of phase front 'twisting' indicates the orbital angular momentum state number, and beams with different orbital angular momentum are orthogonal. Such orbital angular momentum based multiplexing can potentially increase...
متن کاملBetter choices than optical angular momentum multiplexing for communications.
Using optical angular momentum (OAM) beams, Shi et al. (1) demonstrate multiple acoustic channels between arrays of sources and detection points. Even better channels with fewer resources are, however, possible. OAM is not an additional degree of freedom beyond normal spatial multiplexing; using only the OAM “topological charge,” l particularly limits the possible spatial channels, with no obvi...
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2016
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2016.171