The project

The control of the propagation velocity of optical signals has been demonstrated over the past few years using various optical phenomena and different media. This field, which is known as slow and fast light (SFL), has already left a large scientific impact. In SFL, the group velocity is changed in a controllable manner by modifying the refractive index dispersion. This is done through light induced modifications of the material or the structural properties of the SFL medium, thereby changing the propagation characteristics. The potential of SFL is immense; its impact awaits a new class of SFL devices and, more fundamentally, SFL awaits to be implemented in applications where its characteristics could generate its entire potential. On this regard it is fundamental to remark the advantages, in terms of broadband, low losses and distortion, that can be achieved by a continuous control of the phase or delay of the microwave or radiofrequency (RF) signals modulating the optical carrier. In 2007 a ESF Exploratory Workshop took place at the Venice International University and identified interesting new applications in the microwave signal processing, that will open previously unexplored horizons in that field. Several of the participants of that event are now partners in GOSPEL.

To know more about project results dowload the final report.