Mode-division multiplexing (MDM) using few-mode fibers (FMFs) appears as a promising
technology to increase fiber capacity by a few orders of magnitude and sustain the traffic …

Short-reach direct-detection links using mode-division multiplexing (MDM) in multimode
fiber (MMF) can employ receiver-side optical signal processing (OSP), for example, by Mach …

A Mach-Zehnder mesh (MZM), which is comprised of a network of tunable 2× 2 Mach-
Zehnder interferometers and embedded photodetectors (PDs), can be used to perform …

Motivated by the recent interest in single-mode semiconductor optical amplifiers and
multimode erbium-doped fiber amplifiers, we present a unified, comprehensive treatment of …

In ultra-long-haul optical communication systems, polarization-dependent gain from single-
mode semiconductor optical amplifiers or mode-dependent gain from multi-mode erbium …

On the advantages of principal modes for multimode SDM transmission systems Page 1 On
the advantages of principal modes for multimode SDM transmission systems Fabio A …

The rich design landscape of optical fibers offers many opportunities for refractive index
optimization. In particular, the refractive index profiles of multimode fibers (MMFs) and …

The use of digital signal processors (DSP) to equalize coherent optical communication
systems based on spatial division multiplexing (SDM) techniques is widespread in current …

We investigate transceiver design and digital signal processing for spatially multiplexed
transmission over multimode fibers. In conventional architectures, the full spatial domain of …

The performance of mode division multiplexing (MDM) systems is limited by mode-
dependent loss (MDL), which seriously deteriorates the unitarity of the transmission matrix …