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

With the capacity limits of standard single-mode optical fiber fast approaching, new
technologies such as space-division multiplexing are required to avoid an Internet capacity …

The purpose of this book is to introduce the reader to most advanced topics of (i) wireless
communications,(ii) free-space optical (FSO) communications,(iii) indoor optical wireless …

The demonstration of a three‐dimensional tapered mode‐selective coupler in a photonic
chip is reported. This waveguide‐based, ultra‐broadband mode multiplexer was fabricated …

Simple all-fiber three-mode multiplexers were made by adiabatically merging three
dissimilar single-mode cores into one multimode core. This was achieved by collapsing air …

Planar lightwave circuits (PLCs) are waveguide devices that integrate fiber-matched optical
waveguides on silicon or glass substrate to provide an efficient means of interaction for the …

A quarter century of research into deep space and near Earth optical communications This
book captures a quarter century of research and development in deep space optical …

Free-space optics naturally offers multiple-channel communications and sensing exploitable
in many applications. The different optical beams will, however, generally be overlapping at …

138 Tbit/s Transmission over 650 km Graded-Index 6-Mode Fiber Page 1 138 Tbit/s
Transmission over 650 km Graded-Index 6-Mode Fiber John van Weerdenburg(1,2), Roland …

We report on the multiplexing of 12 spatial and polarization channels and 120 wavelength
channels in the C-band, each carrying 16 quadratic-amplitude modulation symbols at 30 …