We derive pulse propagation equation for a graphene-clad optical fibre, treating optical response of graphene and nonlinearity of the dielectric fibre core as perturbations in asymptotic expansion of Maxwell equations. We analyse the effective nonlinear and attenuation coefficients due to the graphene layer. Based on the recent experimental measurements of the nonlinear graphene conductivity, w...

Unlike conventional Polymer Optical Fibre (POF), single -mode Microstructured Polymer Optical Fibre (MPOF) can easily be fabricated, as required for many nonlinear applications. It was demonstrated that tungsten electrodes for poling and measuring the electro -optic coefficient could be incorporated in the PMMA fibre during the draw process. Lengths of up to 70m of this fibre were produced. For...

Propagation time through an optical fibre changes with the environment, e.g., a change in temperature alters the fibre length and its refractive index. These changes have negligible impact in many key fibre applications, e.g., telecommunications, however, they can be detrimental in many others. Examples are fibre-based interferometry (e.g., for precise measurement and sensing) and fibre-based t...

We present a system which uses a single spatial light modulator to control the spin angular momentum of multiple optical traps. These traps may be independently controlled both in terms of spatial location and in terms of their spin angular momentum content. The system relies on a spatial light modulator used in a "split-screen" configuration to generate beams of orthogonal polarisation states ...

This paper presents a review of the latest research and development in the field of fibre optic communication system. Remarkable developments can be seen in the field of optical fibre communication in the last decade. Wide-bandwidth signal transmission with low latency is emerging as a key requirement in a number of applications, including the development of future exaflopscale supercomputers, ...

Digitized-Radio over Fibre (DRoF) techniques provide higher dynamic range and are more robust against optical link impairments. In this paper, a fully-photonic DRoF system is proposed and its performance is investigated in an integrated system with an analogue Radio over Fibre (ARoF) system. In this simulation based evaluation, DRoF and ARoF systems performance in the presence of other channels...

In this paper, a fibre laser at 546 nm has been studied for a signal power of -30 dB. Er-doped ZBLAN fibre has been used by upconversion pumping of a 980 nm laser diode. Gain saturation effect has been investigated in detail. Laser performance has also been discussed. An efficiency of 35% has been calculated with a length of 5 mm fibre laser. Results show that Er-doped ZBLAN is a promising cand...

This paper reviews sensing applications of optical fibre microwires and nanowires. In addition to the usual benefits of sensors based on optical fibres, these sensors are extremely compact and have fast response speeds. In this review sensors will be grouped in three categories according to their morphology: linear sensors, resonant sensors and tip sensors. While linear and resonant sensors mai...

Optical couplers are very important devices in optical communication systems and optical sensor systems. Several types of optical couplers with different materials or different transmission characteristics have been reported. Here we propose a semi-reciprocal polarization maintaining fibre coupler with unique transmission characteristics, which is distinct from conventional polarization maintai...

In this paper we described a structure of an original multiwavelength optical fiber source for DWDM systems. In order to obtain a several dozen of optical carriers with highly stable channel spacing of 4.5GHz a single laser source and acousto optic frequency shifter were used. Results of the analysis of the structure properties were presented. Key-Words: DWDM, EDFA, multiwavelength