Ultra-Precise Optical Timing Onto A Chip

Exquisite timing is essential to many important technologies, including GPS navigation and radar. Optical approaches provide the most precise and stable timing signals, but they require bulky equipment that makes them impractical in many situations. Now, researchers at the National Institute of Standards and Technology (NIST) have created an optical timing system small enough to fit on a single chip, greatly expanding where the technology could be used.

Reference: IEEE spectrum