Also called a "frequency band." See frequency bands, spectrum, satellite frequency bands and optical bands. (2) A group of frequencies that occur naturally such as the audio spectrum. See audio.

A modulator developed by researchers from ETH Zurich has broken the terahertz mark. The ultrafast component efficiently ...

Called a Cascaded-mode interferometer, it is a single waveguide on a silicon-on-insulator platform that can create multiple ...

The adjustment of fill factor and the radius of SiC sphere are the factors of generating NRI material at optical frequency range. The advantage of this structure is that this nanoscale metamaterial is ...

By increasing the applied optical power ... a series of phase-locked lasers separated in frequency by the resonator's free spectral range. It can be demodulated by a fast photodiode to produce ...

Now, researchers from the group led by Jürg Leuthold, Professor of Photonics and Communications at ETH Zurich, Switzerland, have succeeded in doing just that. Previous modulators could only convert ...