Intel and UCSB have developed a hybrid silicon laser and both emits and guides light. This could have wide-ranging effects on the telecommunications and computer industry.
This breakthrough addresses one of the last major barriers to producing low-cost, high-bandwidth silicon photonics devices for use inside and around future computers and data centers.
It’s pretty easy to imagine very high bandwidth connections between devices that would allow all sorts of computing extensions using less space on the desktop and without one central "box" that many of us have become used to.
Electrically pumped Hybrid Silicon Laser. For a demonstration, see this video.