Mode Division Multiplexing of LG and HG modes in Ro-FSO

Abstract

Radio-over-free-space-optics (Ro-FSO) is a strong contender for providing a ubiquitous platform for seamless integration of high capacity radio and optical networks without expensive optical fiber cabling. This work presents mode division multiplexing of LG and HG modes in a 40 GHz Ro-FSO transmission system to realize 4 x 20Gbps over a free space optical link under clear weather conditions. The signal-to-noise-ratio, received power and constellations will be analyzed.

Solid core PCF-based mode selector for MDM-Ro-FSO transmission systems

“…Compatible with existing mobile cellular architectures, Ro-FSO a) allocates RF signals at high bandwidth, b) features low attenuation losses, and c) consumes less power [7,8]. Ro-FSO may pave the way towards a ubiquitous platform for seamless integration of radio and optical networks without expensive optical fiber cabling in WLANs [9]. Recent developments in Ro-FSO include experimental measurements [9][10][11] and mathematical modeling [12][13][14][15] under atmospheric turbulence and scintillation effects.…”

“…Ro-FSO may pave the way towards a ubiquitous platform for seamless integration of radio and optical networks without expensive optical fiber cabling in WLANs [9]. Recent developments in Ro-FSO include experimental measurements [9][10][11] and mathematical modeling [12][13][14][15] under atmospheric turbulence and scintillation effects. To increase the capacity of Ro-FSO systems, multiplexing in the wavelength [16], intensity [17]matand polarization [18] dimensions has been demonstrated.…”

High-speed MDM-Ro-FSO system by incorporating spiral-phased Hermite Gaussian modes

“…In 2012 [30] [36], 100 Gbps data is transmitted over span of 8 km by employing MDM and optical code division multiplexing (OCDMA) scheme. Although MDM is demonstrated for few Ro-FSO works [37][38][39][40][41][42], it largely remains an unexploited area. The current paper aims to examine the Ro-FSO technology under atmospheric turbulences while combining modes for FSO-MDM by adopting two spiral-phased HG modes using vortex lenses, which is not reported in any previous work to the best of authors' knowledge.…”