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 …

Since the first deployments of fiber-optic communication systems three decades ago, the
capacity carried by a single-mode optical fiber has increased by a staggering 10 000 times …

We designed and fabricated a multi-core fiber (MCF) in which seven identical trench-
assisted pure-silica cores were arranged hexagonally. To design MCF, the relation among …

In order to realize fast and accurate estimation of intercore crosstalk in bent multicore fibers
(MCFs), an analytical expression of the average power-coupling coefficient (PCC) based on …

We experience Internet traffic growth of 100 times every 10 years. However, the capacity of
existing standard single-mode fiber is approaching its fundamental limit regardless of …

Space-division multiplexing (SDM) technology is a promising candidate to achieve massive
parallelism in optical fiber cables and overcome the capacity limitation of the conventional …

Coupled-mode and coupled-power theories are described for multi-core fiber design and
analysis. First, in order to satisfy the law of power conservation, mode-coupling coefficients …

The potential transmission capacity of a standard single-mode fiber peaks at around
100Tb/s owing to fiber nonlinearity and the bandwidth limitation of amplifiers. As the last …

We experimentally demonstrate nondegenerate four-wave mixing (FWM) between waves
belonging to different spatial modes of a 5-km-long few-mode fiber (FMF). Of the three inter …

In the past few years, many researchers have studied elastic optical networks, which exhibit
a dramatically improved transmission capacity compared with conventional optical networks …