This article is focused on reviewing the current state-of-the-art of optical fibre pressure sensors for medical applications. Optical fibres have inherent advantages due to their small size, immunity to electromagnetic interferences and their suitability for remote monitoring and multiplexing. The small dimensions of optical fibre-based pressure sensors, together with being lightweight and flex...

We demonstrate error-free 4×10 Gbit/s 1310 nm DWDM simplified-design transmission over 200 km of standard single mode fibre without any dispersion compensation using SOAs. Introduction Recently, optical communication systems operating at multi-Gbit/s, such as 10 Gigabit Ethernet are becoming increasingly important in local area networks (LANs), metropolitan area networks (MANs) and storage are ...

This paper presents a fiber-optic ring network with support for heterogeneous real-time communication. The CCR-EDF (Control Channel Ring network with Earliest Deadline First scheduling) network is an optical fibre-ribbon pipelined ring network with a separate channel for network arbitration. The medium access protocol, that uses the control channel, provides low-level support for hard real time...

Following an episode of optic neuritis, thinning of the retinal nerve fibre layer, which indicates axonal loss, is observed using optical coherence tomography. The longitudinal course of the retinal changes has not been well characterized. We performed a serial optical coherence tomography study in patients presenting with optic neuritis in order to define the temporal evolution of retinal nerv...

For the operation of high void fraction bubbly flows in bubble columns, insight in primary parameters such as bubble size, shape and velocity as well as gas volume fraction is essential. At high gas volume fractions the flow system becomes opaque, ruling out non-intrusive optical techniques. As an alternative optical fibre probes can be used, which have the advantage of low cost, simplicity of ...

In this paper, we compare the theoretical and simulated bit error rate (BER) performance of an all-optical active recirculating fibre loop buffer (RFLB) employed at the transmitter node of an optical time division multiplexed based (OTDM) system, for several buffer storage times (delays). To the best of our knowledge, we believe that this is the first time a theoretical model detailing BER perf...

Lead-gallium-bismuth (PGB) is a non-silica based glass that can be used in the fabrication of optical fibre with high nonlinearity, low transmission loss, high thermal stability, and a broad transparency window. With a nonlinearity two orders higher than that of the fluoride based fibres, it has attracted much attention worldwide for its potential application in the mid-infrared region, particu...

Graphene is a highly versatile two-dimensional material platform that offers exceptional optical and electrical properties. Of these, its dynamic conductivity and low effective carrier mass are of particular interest for optoelectronic applications as they underpin the material's broadband nonlinear optical absorption and ultra-fast carrier mobility, respectively. In this paper, we utilize thes...

Graphene and its derivatives have become the most explored materials since Novoselov and Geim (Nobel Prize winners for Physics in 2010) achieved its isolation in 2004. The exceptional properties of graphene have attracted the attention of the scientific community from different research fields, generating high impact not only in scientific journals, but also in general-interest newspapers. Opti...