... – The approach is based on the transformation optics framework, which allows systematic design and modelling of anisotropic, inhomogeneous metamaterials with inherent field-manipulation capabilities. Findings – The paper finds that a transformation-optics-based DPS slab can compensate the inherent...

.... Originality/value The results demonstrate the importance of using higher order basis FEs in determining optical properties of accelerator tubes and other particle optical devices. Call field.Smooth Set field2=field.Clone().y() This takes the gradient of the field, smoothes the result onto...

...S. Guenneau; A. Nicolet; F. Zolla; C. Geuzaine; B. Meys This paper is devoted to the presentation of a new finite element formulation for spectral problems arising in the determination of propagating modes in dielectric waveguides and particularly in optical fibers. As an example, we compute...