Dispersive Grating

Given that cooking is on so many minds this afternoon (including mine), I have to agree to "dispersive grating" does sound like a messy and/or distributed method for grating carrots, cheese or turnips. But that's not the "dispersive grating" that UC San Diego electrical engineering PhD student Dawn Tan developed.

Scanning electron micrograph of dispersive grating before deposition of SiO2 overcladding. (Decorative blue filter added to image.)  Image credit: UC San Diego / Dawn Tan

Her dispersive grating is for manipulating light on the nanoscale in order to compress pulses of light on computer chips. This kind of on-chip pulse compression is crucial for making the optical interconnects that will replace the copper wires that connect chips in computers of the future.

Read more about this silicon photonics advance published in the journal Nature Communications.