A dielectric fibre with a refractive index higher than its surrounding region is a form of dielectric waveguide which represents a possible medium for the guided transmission of energy at optical frequencies. The particular type of dielectric-fibre waveguide discussed is one with a circular cross-section. The choice of the mode of propagation for a fibre waveguide used for communication purpose...

I introduce the problem of transforming one optical pulse into another via nonlinear propagation in a length of dispersion varying optical fibre. Then using a genetic algorithm to design the dispersion profiles, I show that the problem can be solved leading to high quality pulse transforms that are significantly better than what has been published previously. Finally I suggestion further work a...

The demands for greater spectral efficiency, higher line rate, higher channel count, greater amplifier/repeater spacing, Tb/s capacity DWDM long haul optical communication systems, efficient transmission of optical channels over long-haul optical fibre system is essential. Since the conventional Return to zero (RZ) and Non return to zero (NRZ) modulation formats suffer from dispersion and ineff...

Introduction: Radio-over-fibre (RoF) techniques are attracting much attention from manufacturers and radio network operators for the deployment of flexible and cost-effective radio access systems. For the emerging broadband wireless standards, operating at carrier frequencies beyond 5 GHz, one of the main challenges of RoF techniques is the generation and remote delivery of microwave signals to...

Kerr effect nonlinearities in optical fibres have been the subject of extensive studies [1 – 3]. Four wave-mixing (FWM) between the signal and the amplified spontaneous emission (ASE) noise was found to be an important source for system performance degradation, especially in systems using in-line optical amplifiers. With positive fibre dispersion, this effect is known as modulation instability ...

The increase in availability of installed optical fibre within Europe is presenting a unique opportunity to upgrade the European Very Long Baseline Interferometry Network (EVN). This network of European radio observatories regularly take part in joint sessions to observe celestial radio sources at high resolution, using sophisticated magnetic tape equipment to record data at rates up to 1 Gbit/...

Introduction: Owing to the decreasing cost of powerful integrated circuits, electronic signal processing in digital optical communication systems is receiving increasing scientific and industrial interest. In 10 Gbit=s optical links, such as those used in metropolitan and wide area networks, chromatic dispersion (CD) compensation plays an important role and affects significantly the communicati...

The Optical communication network offers very high potential bandwidth and flexibility In terms of high bit-rate transmission. However, their performance slows down due to some parameter like dispersion, attenuation, scattering and unsynchronized bit pattern. A chromatic dispersion compensator plays an essential role in the optical fiber communications system in order to recover the degraded tr...

A detailed experimental characterization of the transition process of an initially Gaussian pulse to the asymptotic self-similar parabolic solution in optical fibre amplifiers operating in the normal dispersion regime is performed.