Crossover interconnects in gradient-index planar optics

The point spread function (PSF) in gradient-index planar optics for implementation of crossover interconnects is studied. Gradient-index (GRIN) planar optics is made with refractive substrate providing a smart optical diffraction-limited imaging. We use as a figure of merit the space-bandwidth product (SBP) of the planar imaging system in order to estimate the number of data channels which can be handled in crossover interconnects. For a selfoc semirod-lens of 3 mm diameter, a crossover network configuration of 703 × 703 channels can be designed.