Hamid Hemmati, PhD, is the director of engineering for telecom infrastructure at Facebook, Inc. Prior to that he was with the Jet Propulsion Laboratory (JPL), California Institute of Technology for 28 years as principal member of staff and the supervisor of the optical communications group. Previous to joining JPL in 1986, he was a researcher at NASA’s Goddard Space Flight Center and at NIST. He has published over 200 journal and conference papers and nine patents. He is the editor and author of two books: Deep Space Optical Communications and Near-Earth Laser Communications, and author of five other book chapters. In 2011 he received NASA’s Exceptional Service Medal. He has also received 3 NASA Space Act Board Awards, and 36 NASA certificates of appreciation. He is a Fellow member of The Optical Society and SPIE. His research interests are in providing global Internet connectivity, and greatly advancing laser and millimeter-wave communications technologies for terrestrial, airborne, and spacecraft applications.