The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper reports an experimental investigation of using orthogonal frequency division multiplexing (OFDM) on orbital-angular momentum (OAM) channels when there is intersymbol interference (ISI) caused by multipath effects. The impulse response measurement indicates that due to the divergence of OAM beams, channels of larger OAM number are more affected by the ISI caused the reflections from surrounding...
We demonstrate a new freedom to handle orbital-angular-momentum order. Using coordinate transformation we realize the bidirectional transformation between orders 2l (l=+5 to −5) and orders l. Mode purity and 2 OAM multiplexing system characteristics after division and multiplication are shown.
A multiple-layer-overlay (MLO) modulation format is employed for a 14-km optical fiber link and an enhanced spectral efficiency of 2.36 bits/s/Hz is achieved by multiplexing 3-layer signals with each layer carrying a 2-Gbit/s QPSK signal.
We demonstrate a scheme that can arbitrarily manipulate the orbital-angular-momentum (OAM) and the polarization of each data channel in an OAM- and polarization-multiplexed communication system. A manipulation-induced power penalty of < 1dB is observed when 100 Gbit/s Quadrature-phase-shift-keying data is carried on each channel.
Free-space-optical (FSO) coherent communication is a cost-effective, license-free, high-sensitivity and wide-bandwidth access technique for high date rates applications, whereas its performance strongly suffers from the turbulent atmosphere for the reason of both intensity scintillation and phase fluctuation. In this paper, the intensity scintillation is modeled as a multiplicative random process...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.