Since the discovery that tightly focused femtosecond laser pulses can induce a highly
localised and permanent refractive index modification in a large number of transparent …

The continuing trend of exponential growth in data communications and processing are
driving the need for large-scale heterogeneous integration. Similar to the trend we have …

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

We investigated an all-fiber mode converter based on long-period fiber gratings (LPFGs)
written in the few-mode fiber. Mode conversion between the fundamental core mode and …

Explosive growth in demand for data traffic has prompted exploration of the spatial
dimension of light waves, which provides a degree of freedom to expand data transmission …

Abstract Space-division multiplexing (SDM), whereby multiple spatial channels in multimode
and multicore optical fibres are used to increase the total transmission capacity per fibre, is …

Space-division multiplexing based on few-mode multi-core fiber (FM-MCF) technology is
expected to break the Shannon limit of a single-mode fiber. However, an FM-MCF is …

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 …

Multi-input multi-output (MIMO) digital signal processing (DSP) for mode-division
multiplexing (MDM) may have high complexity, owing to a plurality of modes and a …

This paper discusses recent advances on the newly developed high-density three-
dimensional photonic integrated circuits (3-D PICs). In particular, we introduce our efforts in …