This article presents the propagation of solitons in linear birefringent single-mode fibers under the influence of third-order dispersion. The behaviour of two partial pulses evolved due to polarization mode dispersion is investigated under the presence of thirdorder dispersion (TOD). The analytical solutions to coupled nonlinear Schrödinger equations (CNLSE) with TOD are derived using multiple scale perturbation expansion and the results are compared with the solutions obtained using split-step Fourier method to find the effects of TOD on soliton propagation. It is found that the resultant soliton deviates from its initial position with third-order dispersion and this deviation is considerably small when the pulse propagates relatively far from the zero-dispersion wavelength. It is observed that the behaviour of two partial pulses and their subsequent properties depend not only on the fiber parameters, but also on the amplitude of the launched soliton pulses.

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The Editor-in-Chief and the publisher have retracted this article. This article was submitted to be part of a guestedited issue. An investigation concluded that the editorial process of this guest-edited issue was compromised by a third party and that the peer review process has been manipulated. Based on the investigation's findings the Editor-in-Chief therefore no longer has confidence in the results and conclusions of this article.Author Saradha Rani Sabbavarapu disagrees with this retraction. Author Sasibhushans Rao Gottapu has not stated whether they agree or disagree with this retraction. Author Prabhakara Rao Bhima has not responded to correspondence regarding this retraction.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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The dielectric resonator antenna (DRA) has revolutionized the latest generation of communication systems with their obvious advantages of small size, bandwidth, and power-consuming capabilities. In this paper, an analysis of the impact of the dielectric material on the radiation characteristics of the DRA is presented with simulation reports. The proposed antenna takes the shape of a circular patch with the dielectric resonator having different shapes. This helps to analyze the impact of the tapering adjustments on the features of the antenna. The simulations are performed using the latest version of the complex electromagnetic modeling tool, and results are analyzed in terms of simulated reports like reflection coefficient (S11), voltage standing wave ratio, radiation patterns, and field distribution plots. The overall size of the proposed antenna is 18 × 12 mm². The measured results are in good agreement with the simulation results. The proposed DRA is suitable for mobile wireless applications.