Electrons have been channelled through graphene wires using the principles of optical guiding by fibre optic cables.

The invention of the optical fibre was one of the most noticeable technological breakthroughs in the recent history. Optical fibres steadily replaced copper wires and satellite links in telecommunication systems industry and, along with the development of microelectronics and of advanced IT software, laid the foundations for our information society. Optical fibres have also been used in other f...

In this paper, we present a performance analysis of a Multi-band, Orthogonal Frequency Division Multiplexing (MB-OFDM) Radio-Over-Fibre (RoF) system for UltraWideband (UWB) applications in the 60-GHz radio band. We have made use of two cascaded Mach-Zehnder modulators (MZMs) to carry out optical upconversion of the MB-OFDM signal to the 60 GHz band. The impact of the non-linearity of the MZM, f...

Abstract: Optical single sideband (OSSB) signals are conventionally generated using a dual-drive Mach–Zehnder modulator (MZM) or by using a single-drive MZM in conjunction with a fibre Bragg grating filter. In this study, the authors propose and mathematically characterise a novel radio over fibre downlink in which an OSSB signal is generated using a single-drive, rather than dual-drive, MZM wi...

Introduction: Polarisation mode dispersion (PMD) is an important factor in the performance of long-distance high speed optical transmission systems. There is clearly a need for a practical approach that supports the network provider’s planning and route design process for possible capacity upgrading in existing fibre plants, such as to retrofit 10 Gbit/s dense wave division multiplexing (DWDM) ...