Baris Erkmen, Hedron CEO and chief technology officer, at Hedron in Los Angeles, California. Credit: The Engine SAN FRANCISCO — After focusing on optical communications for more than 20 years, Hedron CEO Baris Erkmen, has a clear view of the challenges and opportunities offered by the technology. Since earning a PhD in electrical engineering from the Massachusetts Institute of Technology with a thesis on optical communications, Erkmen has designed, developed, prototyped and deploye...