Optical transport and access network technologies [Series editorial]

As we move further into the second decade of the 21st century, the transformation of the global telecommunications industry continues via advancements in all communications technologies from optical transport to access networks. We devoted a special issue in February 2011, a special OFCNFOEC ´11 supplement, to advances in passive optical network (PON) technologies, and we selected PONs as our theme again in the November OCS (Optical Communications Series) issue in recognition of the continuing worldwide focus on PON technologies.