Publication details
Controlling refractive index of transformation-optics devices via optical path rescaling
| Authors | |
|---|---|
| Year of publication | 2019 |
| Type | Article in Periodical |
| Magazine / Source | Scientific reports |
| MU Faculty or unit | |
| Citation | |
| Web | https://www.nature.com/articles/s41598-019-54516-0 |
| Doi | http://dx.doi.org/10.1038/s41598-019-54516-0 |
| Keywords | 3-DIMENSIONAL BROAD-BAND; CONFORMAL-TRANSFORMATION; POLARIZATION SPLITTER; LENS ANTENNAS; LUNEBURG LENS; DESIGN; INVERSE; GRADIENT; LIGHT |
| Description | We present a general method of designing optical devices based on optical conformal mapping and rescaling the optical path along a given bunch of rays. It provides devices with the same functionality as those based purely on conformal mapping, but enables to manipulate the refractive index to a great extent-for instance, eliminate superluminal regions of space as well as reduce the refractive index in other regions significantly. The method is illustrated in two examples, a waveguide coupler and a plasmonic bump cloak, and numerical simulations confirm its functionality. |