A direct approach is applied to the periodic amplification of a soliton in an optical fibre link with loss. In a single soliton case, the adiabatic solution and first-order correction are given for the system. The apparent advantage of this direct approach is that it not only presents the slow evolution of soliton parameters, but also the perturbation-induced radiation, and can be easily used t...

Stochastic numerical simulations are used to study the statistical properties of supercontinuum spectra generated in photonic crystal fibre with two zero dispersion wavelengths. For picosecond pulse excitation, we examine how the statistical properties of solitons generated on the long wavelength edge of the supercontinuum (“optical rogue waves”) are modified by energy transfer to dispersive wa...

Introduction: The use of wavelength division multiplexing (WDM) and optical amplification as a method of increasing the information capacity and/or reach in optical fibre systems has led to significant propagation impairments owing to fibre nonlinearity [1]. Important nonlinear effects causing inter-channel crosstalk in WDM systems are four wave mixing (FWM) and cross phase modulation (XPM). FW...

Optical pulse compression using similariton propagation in an optical fibre with decreasing dispersion has been demonstrated for the first time. This scheme is a practical application of sech-similariton solution to generalized nonlinear schrodinger equation(NLSE) distributed coefficients recently found self similarity technique. The profile constructed comb-profile approximation technique and ...

We deploy a supervised machine-learning model based on neural network to predict the temporal and spectral reshaping of simple sinusoidal modulation into pulse train having comb structure in frequency domain, which occurs upon nonlinear propagation an optical fibre. Both normal anomalous second-order dispersion regimes fibre are studied, speed is leveraged probe space input parameters for gener...

Introduction: Orthogonal-frequency-division-multiplexing (OFDM) is a special form of multicarrier modulation where a single data stream is transmitted over a number of lower rate orthogonal subcarriers [1]. Such a format has been widely implemented in various digital communication standards. Recently we proposed an equivalent optical multicarrier modulation format, called coherent optical OFDM ...

Four-Wave Mixing is one of the few all-optical techniques which provides fully transparent wavelength conversion. Here, we demonstrate Four-Wave Mixing generation in a band of up to 20 nm centred at the zero dispersion wavelength of a photonic crystal fibre (1560 nm). A stable efficiency around -35 dB is maintained across the band using a pump power of 10 dBm. The experimental results are in go...

Waveguides with low confinement loss, low chromatic dispersion, and low nonlinear effects are used in optical communication systems. Optical fibers can also be employed in such systems. Besides optical fibers, photonic crystal fibers are also highly suitable transmission media for optical communication systems. In this paper, we introduce two new designs of index-guiding photonic crystal fiber ...

The effect of delay and reflectivity ripples of dispersion compensating fibre gratings on systems operated at 10 Gb/s over 100 km of standard single-mode fibre is investigated for partial or total dispersion compensation .