A zero-index waveguide Researchers directly observe infinitely long wavelengths for the first time Date: October 9, 2017 Source: Harvard John A. Paulson School of Engineering and Applied Sciences ...

In 2015, Harvard researchers developed the first on-chip metamaterial with a refractive index of zero, meaning that the phase of light could be stretched infinitely long. The metamaterial ...

Conformal metasurface-coated dielectric waveguides for highly confined broadband optical activity with simultaneous low-visibility and reduced crosstalk. Nature Communications , 2017; 8 (1) DOI ...

Guiding light (expand for full image) Physicists at Harvard University in the US have built a silicon waveguide that exhibits a refractive index of, or close to, zero when operating at near-infrared ...

image: Rod shaped waveguide with two quasi-two dimensional conformal coatings that sheild the waveguide from crosstalk and blocking and allow the waveguide to be smaller. view more Credit: Werner ...

Mazur’s researchers developed and built such a waveguide but, without the help of a prism they had no easy way to prove if it had a refractive index of zero. Then, postdoctoral fellows Orad Reshef and ...

A way to simultaneously control diverse optical properties of dielectric waveguides by using a quasi 2D two-layer coating has been found by a team of Penn State electrical engineers. “Waveguides are ...

Pasternack has released six new waveguide detectors that cover a broad frequency range of 26.5 GHz to 110 GHz. The devices are all zero-biased, so no external DC bias or mechanical tuning is required.