Space-division multiplexing (SDM) uses multiplicity of space channels to increase capacity
for optical communication. It is applicable for optical communication in both free space and …

Multicore fibers (MCFs) are expected as a good candidate for overcoming the capacity limit
of a current optical communication system. This paper describes the recent progress on the …

In this paper, we describe recent progress in space-division multiplexed (SDM)
transmission, and our proposal and demonstration of dense space-division multiplexing …

Submarine networks have evolved alongside terrestrial ones over the past several decades.
Although there are similarities between these two network categories (eg, the need to cover …

Multicore fibers and few-mode fibers have potential application in realizing dense-space-
division multiplexing systems. However, there are some tradeoff requirements for designing …

We report the development of a space division multiplexed (SDM) transmission system
consisting of a 19-core fiber and 19-core Erbium-doped fiber amplifier (EDFA). A new 19 …

In this paper, we review recent progress on space division multiplexed (SDM) transmission
and our proposal of dense SDM (DSDM) with more than 30 spatial channels toward …

In this paper, we review space division multiplexing (SDM) transmission experimental
demonstrations and associated technologies. In past years, SDM achieved high capacity …

We propose long-haul space-division-multiplexing (SDM) transmission systems employing
parallel multiple-input multiple-output (MIMO) frequency-domain equalization (FDE) and …

This paper describes ultra-high capacity long haul optical transmission technologies based
on multicore fibers (MCFs) with space-division multiplexing. First, we discuss the factors …