Multimode optical fibers have been primarily (and almost solely) used as “light pipes” in
short distance telecommunications and in remote and astronomical spectroscopy. The …

Four-mode multiplexing and manipulation technologies are reviewed in the context of space-
division multiplexing (SDM) optical communication systems. These are multiplane light …

We report the optimization of a few-mode fiber, adapted to multiple-input multiple-output
mode division multiplexing, that supports 9 LP modes (15 spatial modes). The fiber is …

We present a new technique allowing the fabrication of large modal count photonic lanterns
for space-division multiplexing applications. We demonstrate mode-selective photonic …

Partial multiple-input multiple-output (MIMO)-based weakly coupled mode-division
multiplexing (MDM) transmission is proposed to reduce the MIMO matrix size in MDM. This …

Multimode optical fibers have recently reemerged as a viable platform for addressing a
number of long-standing issues associated with information bandwidth requirements and …

Recently, mode-division multiplexing (MDM) has been investigated in transmission systems
and optical access networks for capacity enhancement. In this paper, recent progress in …

We report a mode (de) multiplexer based on the structure of cascaded vertical waveguide
directional couplers, where the spatial modes of a few-mode core are coupled to various …

The majority of optical fiber technology developments in the applied sciences have arisen
from developments in telecommunications. However, the photonic lantern is one of several …

Optical vortex beams that carry orbital angular momentum (OAM), also known as OAM
modes, have attracted considerable interest in recent years as they can comprise an …